249051988 has 6 divisors (see below), whose sum is σ = 435840986. Its totient is φ = 124525992.

The previous prime is 249051977. The next prime is 249051991. The reversal of 249051988 is 889150942.

249051988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 230493124 + 18558864 = 15182^2 + 4308^2 .

It is a super-5 number, since 5×249051988⁵ (a number of 43 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31131495 + ... + 31131502.

Almost surely, 2^249051988 is an apocalyptic number.

It is an amenable number.

249051988 is a deficient number, since it is larger than the sum of its proper divisors (186788998).

249051988 is a wasteful number, since it uses less digits than its factorization.

249051988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62263001 (or 62262999 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 249051988 is about 15781.3810549014. The cubic root of 249051988 is about 629.1632361279.

The spelling of 249051988 in words is "two hundred forty-nine million, fifty-one thousand, nine hundred eighty-eight".