Search a number
-
+
149797 = 163919
BaseRepresentation
bin100100100100100101
321121111001
4210210211
514243142
63113301
71162504
oct444445
9247431
10149797
11a25aa
1272831
135324b
143c83b
152e5b7
hex24925

149797 has 4 divisors (see below), whose sum is σ = 150880. Its totient is φ = 148716.

The previous prime is 149791. The next prime is 149803. The reversal of 149797 is 797941.

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 an interprime number because it is at equal distance from previous prime (149791) and next prime (149803).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-149797 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297 + ... + 622.

It is an arithmetic number, because the mean of its divisors is an integer number (37720).

2149797 is an apocalyptic number.

It is an amenable number.

149797 is a deficient number, since it is larger than the sum of its proper divisors (1083).

149797 is an equidigital number, since it uses as much as digits as its factorization.

149797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082.

The product of its digits is 15876, while the sum is 37.

The square root of 149797 is about 387.0361740199. The cubic root of 149797 is about 53.1089487840.

It can be divided in two parts, 149 and 797, that added together give a triangular number (946 = T43).

The spelling of 149797 in words is "one hundred forty-nine thousand, seven hundred ninety-seven".

Divisors: 1 163 919 149797