249238465 has 32 divisors (see below), whose sum is σ = 358018560. Its totient is φ = 162860544.

The previous prime is 249238433. The next prime is 249238477. The reversal of 249238465 is 564832942.

It is not a de Polignac number, because 249238465 - 2⁵ = 249238433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328867 + ... + 329623.

It is an arithmetic number, because the mean of its divisors is an integer number (11188080).

Almost surely, 2^249238465 is an apocalyptic number.

It is an amenable number.

249238465 is a deficient number, since it is larger than the sum of its proper divisors (108780095).

249238465 is a wasteful number, since it uses less digits than its factorization.

249238465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its digits is 414720, while the sum is 43.

The square root of 249238465 is about 15787.2880825049. The cubic root of 249238465 is about 629.3202250411.

The spelling of 249238465 in words is "two hundred forty-nine million, two hundred thirty-eight thousand, four hundred sixty-five".