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249493 = 347719
BaseRepresentation
bin111100111010010101
3110200020111
4330322111
530440433
65203021
72056246
oct747225
9420214
10249493
111604a2
12100471
138973a
1466ccd
154ddcd
hex3ce95

249493 has 4 divisors (see below), whose sum is σ = 250560. Its totient is φ = 248428.

The previous prime is 249463. The next prime is 249497. The reversal of 249493 is 394942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 249493 - 29 = 248981 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 217 + 42 + 43 + 95 + 95 + 35 .

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13 + ... + 706.

It is an arithmetic number, because the mean of its divisors is an integer number (62640).

2249493 is an apocalyptic number.

It is an amenable number.

249493 is a deficient number, since it is larger than the sum of its proper divisors (1067).

249493 is an equidigital number, since it uses as much as digits as its factorization.

249493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066.

The product of its digits is 7776, while the sum is 31.

The square root of 249493 is about 499.4927426900. The cubic root of 249493 is about 62.9534383431.

It can be divided in two parts, 24949 and 3, that multiplied together give a palindrome (74847).

The spelling of 249493 in words is "two hundred forty-nine thousand, four hundred ninety-three".

Divisors: 1 347 719 249493