1264399796 has 12 divisors (see below), whose sum is σ = 2413854240. Its totient is φ = 574727160.

The previous prime is 1264399733. The next prime is 1264399811. The reversal of 1264399796 is 6979934621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14368136 + ... + 14368223.

It is an arithmetic number, because the mean of its divisors is an integer number (201154520).

Almost surely, 2^1264399796 is an apocalyptic number.

It is an amenable number.

1264399796 is a deficient number, since it is larger than the sum of its proper divisors (1149454444).

1264399796 is a wasteful number, since it uses less digits than its factorization.

1264399796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28736374 (or 28736372 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 56.

The square root of 1264399796 is about 35558.3997952664. The cubic root of 1264399796 is about 1081.3380181346.

The spelling of 1264399796 in words is "one billion, two hundred sixty-four million, three hundred ninety-nine thousand, seven hundred ninety-six".