249157916 has 48 divisors (see below), whose sum is σ = 536340672. Its totient is φ = 98841600.

The previous prime is 249157897. The next prime is 249157991. The reversal of 249157916 is 619751942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24746 + ... + 33326.

It is an arithmetic number, because the mean of its divisors is an integer number (11173764).

Almost surely, 2^249157916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249157916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268170336).

249157916 is an abundant number, since it is smaller than the sum of its proper divisors (287182756).

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

249157916 is a wasteful number, since it uses less digits than its factorization.

249157916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670 (or 8668 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 249157916 is about 15784.7368049011. The cubic root of 249157916 is about 629.2524230714.

The spelling of 249157916 in words is "two hundred forty-nine million, one hundred fifty-seven thousand, nine hundred sixteen".