79271969 has 16 divisors (see below), whose sum is σ = 96559488. Its totient is φ = 63528192.

The previous prime is 79271957. The next prime is 79271977. The reversal of 79271969 is 96917297.

It is not a de Polignac number, because 79271969 - 2²⁰ = 78223393 is a prime.

It is a super-2 number, since 2×79271969² = 12568090138273922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79271909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16562 + ... + 20804.

It is an arithmetic number, because the mean of its divisors is an integer number (6034968).

Almost surely, 2^79271969 is an apocalyptic number.

It is an amenable number.

79271969 is a deficient number, since it is larger than the sum of its proper divisors (17287519).

79271969 is a wasteful number, since it uses less digits than its factorization.

79271969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424.

The product of its digits is 428652, while the sum is 50.

The square root of 79271969 is about 8903.4807238518. The cubic root of 79271969 is about 429.5758734935.

The spelling of 79271969 in words is "seventy-nine million, two hundred seventy-one thousand, nine hundred sixty-nine".