249495039 has 16 divisors (see below), whose sum is σ = 369868800. Its totient is φ = 166219128.

The previous prime is 249495031. The next prime is 249495049. The reversal of 249495039 is 930594942.

It is a happy number.

It is not a de Polignac number, because 249495039 - 2³ = 249495031 is a prime.

It is a super-2 number, since 2×249495039² = 124495548971223042, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 249494985 and 249495003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249495031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67842 + ... + 71424.

It is an arithmetic number, because the mean of its divisors is an integer number (23116800).

Almost surely, 2^249495039 is an apocalyptic number.

249495039 is a deficient number, since it is larger than the sum of its proper divisors (120373761).

249495039 is a wasteful number, since it uses less digits than its factorization.

249495039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171 (or 6165 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 249495039 is about 15795.4119604397. The cubic root of 249495039 is about 629.5360983984.

The spelling of 249495039 in words is "two hundred forty-nine million, four hundred ninety-five thousand, thirty-nine".