1295979969 has 16 divisors (see below), whose sum is σ = 1753795584. Its totient is φ = 851096400.

The previous prime is 1295979961. The next prime is 1295979973. The reversal of 1295979969 is 9699795921.

It is not a de Polignac number, because 1295979969 - 2³ = 1295979961 is a prime.

It is a super-2 number, since 2×1295979969² = 3359128160098481922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1295979961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388342 + ... + 391664.

It is an arithmetic number, because the mean of its divisors is an integer number (109612224).

Almost surely, 2^1295979969 is an apocalyptic number.

It is an amenable number.

1295979969 is a deficient number, since it is larger than the sum of its proper divisors (457815615).

1295979969 is a wasteful number, since it uses less digits than its factorization.

1295979969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5228.

The product of its digits is 24800580, while the sum is 66.

The square root of 1295979969 is about 35999.7217905917. The cubic root of 1295979969 is about 1090.2667385804.

The spelling of 1295979969 in words is "one billion, two hundred ninety-five million, nine hundred seventy-nine thousand, nine hundred sixty-nine".