249149772 has 18 divisors (see below), whose sum is σ = 629795348. Its totient is φ = 83049912.

The previous prime is 249149723. The next prime is 249149819. The reversal of 249149772 is 277941942.

It is a happy number.

249149772 is a `hidden beast` number, since 2 + 4 + 91 + 497 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3460378 + ... + 3460449.

Almost surely, 2^249149772 is an apocalyptic number.

It is an amenable number.

249149772 is an abundant number, since it is smaller than the sum of its proper divisors (380645576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249149772 is a wasteful number, since it uses less digits than its factorization.

249149772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6920837 (or 6920832 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 249149772 is about 15784.4788320679. The cubic root of 249149772 is about 629.2455670613.

The spelling of 249149772 in words is "two hundred forty-nine million, one hundred forty-nine thousand, seven hundred seventy-two".