79972347 has 32 divisors (see below), whose sum is σ = 131991552. Its totient is φ = 41940864.

The previous prime is 79972313. The next prime is 79972351. The reversal of 79972347 is 74327997.

It is a happy number.

It is not a de Polignac number, because 79972347 - 2⁸ = 79972091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79972296 and 79972305.

It is not an unprimeable number, because it can be changed into a prime (79972307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53038 + ... + 54524.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^79972347 is an apocalyptic number.

79972347 is a deficient number, since it is larger than the sum of its proper divisors (52019205).

79972347 is a wasteful number, since it uses less digits than its factorization.

79972347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707.

The product of its digits is 666792, while the sum is 48.

The square root of 79972347 is about 8942.7259266960. The cubic root of 79972347 is about 430.8372851328.

The spelling of 79972347 in words is "seventy-nine million, nine hundred seventy-two thousand, three hundred forty-seven".