249772315 has 32 divisors (see below), whose sum is σ = 332027136. Its totient is φ = 179245440.

The previous prime is 249772291. The next prime is 249772319. The reversal of 249772315 is 513277942.

It is not a de Polignac number, because 249772315 - 2⁵ = 249772283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249772319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361120 + ... + 361810.

It is an arithmetic number, because the mean of its divisors is an integer number (10375848).

Almost surely, 2^249772315 is an apocalyptic number.

249772315 is a deficient number, since it is larger than the sum of its proper divisors (82254821).

249772315 is a wasteful number, since it uses less digits than its factorization.

249772315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its digits is 105840, while the sum is 40.

The square root of 249772315 is about 15804.1866288652. The cubic root of 249772315 is about 629.7692234442.

The spelling of 249772315 in words is "two hundred forty-nine million, seven hundred seventy-two thousand, three hundred fifteen".