79047969 has 48 divisors (see below), whose sum is σ = 142644096. Its totient is φ = 37889280.

The previous prime is 79047967. The next prime is 79047979. The reversal of 79047969 is 96974097.

It is not a de Polignac number, because 79047969 - 2¹ = 79047967 is a prime.

It is a super-2 number, since 2×79047969² = 12497162806049922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79047967) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31837 + ... + 34229.

It is an arithmetic number, because the mean of its divisors is an integer number (2971752).

Almost surely, 2^79047969 is an apocalyptic number.

It is an amenable number.

79047969 is a deficient number, since it is larger than the sum of its proper divisors (63596127).

79047969 is a wasteful number, since it uses less digits than its factorization.

79047969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 79047969 is about 8890.8924748869. The cubic root of 79047969 is about 429.1708721030.

The spelling of 79047969 in words is "seventy-nine million, forty-seven thousand, nine hundred sixty-nine".