79940523 has 16 divisors (see below), whose sum is σ = 115670016. Its totient is φ = 48815520.

The previous prime is 79940521. The next prime is 79940527. The reversal of 79940523 is 32504997.

It is not a de Polignac number, because 79940523 - 2¹ = 79940521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (79940521) 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, 2715 + ... + 12932.

It is an arithmetic number, because the mean of its divisors is an integer number (7229376).

Almost surely, 2^79940523 is an apocalyptic number.

79940523 is a deficient number, since it is larger than the sum of its proper divisors (35729493).

79940523 is a wasteful number, since it uses less digits than its factorization.

79940523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15794.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 79940523 is about 8940.9464264137. The cubic root of 79940523 is about 430.7801287724.

The spelling of 79940523 in words is "seventy-nine million, nine hundred forty thousand, five hundred twenty-three".