1259939944 has 16 divisors (see below), whose sum is σ = 2438593920. Its totient is φ = 609648240.

The previous prime is 1259939939. The next prime is 1259939969. The reversal of 1259939944 is 4499399521.

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, 2539954 + ... + 2540449.

It is an arithmetic number, because the mean of its divisors is an integer number (152412120).

Almost surely, 2^1259939944 is an apocalyptic number.

It is an amenable number.

1259939944 is a deficient number, since it is larger than the sum of its proper divisors (1178653976).

1259939944 is a wasteful number, since it uses less digits than its factorization.

1259939944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080440 (or 5080436 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 55.

The square root of 1259939944 is about 35495.6327454519. The cubic root of 1259939944 is about 1080.0651378180.

The spelling of 1259939944 in words is "one billion, two hundred fifty-nine million, nine hundred thirty-nine thousand, nine hundred forty-four".