249492172 has 6 divisors (see below), whose sum is σ = 436611308. Its totient is φ = 124746084.

The previous prime is 249492167. The next prime is 249492181. The reversal of 249492172 is 271294942.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31186518 + ... + 31186525.

Almost surely, 2^249492172 is an apocalyptic number.

It is an amenable number.

249492172 is a deficient number, since it is larger than the sum of its proper divisors (187119136).

249492172 is a wasteful number, since it uses less digits than its factorization.

249492172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62373047 (or 62373045 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 249492172 is about 15795.3212059774. The cubic root of 249492172 is about 629.5336870119.

The spelling of 249492172 in words is "two hundred forty-nine million, four hundred ninety-two thousand, one hundred seventy-two".