249871012 has 12 divisors (see below), whose sum is σ = 440467020. Its totient is φ = 124023296.

The previous prime is 249871003. The next prime is 249871021. The reversal of 249871012 is 210178942.

It is an interprime number because it is at equal distance from previous prime (249871003) and next prime (249871021).

It can be written as a sum of positive squares in 2 ways, for example, as 71808676 + 178062336 = 8474^2 + 13344^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227437 + ... + 228532.

It is an arithmetic number, because the mean of its divisors is an integer number (36705585).

Almost surely, 2^249871012 is an apocalyptic number.

It is an amenable number.

249871012 is a deficient number, since it is larger than the sum of its proper divisors (190596008).

249871012 is a wasteful number, since it uses less digits than its factorization.

249871012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456110 (or 456108 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 249871012 is about 15807.3088158611. The cubic root of 249871012 is about 629.8521631779.

The spelling of 249871012 in words is "two hundred forty-nine million, eight hundred seventy-one thousand, twelve".