1249479744 has 28 divisors (see below), whose sum is σ = 3305915664. Its totient is φ = 416493184.

The previous prime is 1249479733. The next prime is 1249479779. The reversal of 1249479744 is 4479749421.

It is a happy number.

It is a super-2 number, since 2×1249479744² = 3122399261332611072, which contains 22 as substring.

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, 3253662 + ... + 3254045.

Almost surely, 2^1249479744 is an apocalyptic number.

It is an amenable number.

1249479744 is an abundant number, since it is smaller than the sum of its proper divisors (2056435920).

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

1249479744 is an equidigital number, since it uses as much as digits as its factorization.

1249479744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6507722 (or 6507712 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 1249479744 is about 35347.9807626970. The cubic root of 1249479744 is about 1077.0678766010.

The spelling of 1249479744 in words is "one billion, two hundred forty-nine million, four hundred seventy-nine thousand, seven hundred forty-four".