249109656 has 16 divisors (see below), whose sum is σ = 622774200. Its totient is φ = 83036544.

The previous prime is 249109633. The next prime is 249109657. The reversal of 249109656 is 656901942.

It is a happy number.

249109656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249109657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5189761 + ... + 5189808.

Almost surely, 2^249109656 is an apocalyptic number.

It is an amenable number.

249109656 is an abundant number, since it is smaller than the sum of its proper divisors (373664544).

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

249109656 is a wasteful number, since it uses less digits than its factorization.

249109656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10379578 (or 10379574 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 249109656 is about 15783.2080389254. The cubic root of 249109656 is about 629.2117933063.

The spelling of 249109656 in words is "two hundred forty-nine million, one hundred nine thousand, six hundred fifty-six".