249387 has 8 divisors (see below), whose sum is σ = 336336. Its totient is φ = 164352.

The previous prime is 249383. The next prime is 249397. The reversal of 249387 is 783942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249387 - 2² = 249383 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 4³ + 3⁴ + 9 + 8³ + 7⁶ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249387.

It is not an unprimeable number, because it can be changed into a prime (249383) 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 7 ways as a sum of consecutive naturals, for example, 138 + ... + 719.

It is an arithmetic number, because the mean of its divisors is an integer number (42042).

249387 is a Friedman number, since it can be written as 38*(9^4+2)-7, using all its digits and the basic arithmetic operations.

2²⁴⁹³⁸⁷ is an apocalyptic number.

249387 is a deficient number, since it is larger than the sum of its proper divisors (86949).

249387 is an equidigital number, since it uses as much as digits as its factorization.

249387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957.

The product of its digits is 12096, while the sum is 33.

The square root of 249387 is about 499.3866237696. The cubic root of 249387 is about 62.9445215803.

It can be divided in two parts, 249 and 387, that added together give a palindrome (636).

The spelling of 249387 in words is "two hundred forty-nine thousand, three hundred eighty-seven".