79643397 has 16 divisors (see below), whose sum is σ = 107916480. Its totient is φ = 52238592.

The previous prime is 79643387. The next prime is 79643401. The reversal of 79643397 is 79334697.

It is not a de Polignac number, because 79643397 - 2⁸ = 79643141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79643387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78429 + ... + 79437.

It is an arithmetic number, because the mean of its divisors is an integer number (6744780).

Almost surely, 2^79643397 is an apocalyptic number.

It is an amenable number.

79643397 is a deficient number, since it is larger than the sum of its proper divisors (28273083).

79643397 is a wasteful number, since it uses less digits than its factorization.

79643397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its digits is 857304, while the sum is 48.

The square root of 79643397 is about 8924.3149316908. The cubic root of 79643397 is about 430.2457527967.

The spelling of 79643397 in words is "seventy-nine million, six hundred forty-three thousand, three hundred ninety-seven".