79209875 has 16 divisors (see below), whose sum is σ = 102267360. Its totient is φ = 61180000.

The previous prime is 79209869. The next prime is 79209877. The reversal of 79209875 is 57890297.

It is not a de Polignac number, because 79209875 - 2¹⁰ = 79208851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79209877) 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, 7301 + ... + 14550.

It is an arithmetic number, because the mean of its divisors is an integer number (6391710).

Almost surely, 2^79209875 is an apocalyptic number.

79209875 is a deficient number, since it is larger than the sum of its proper divisors (23057485).

79209875 is a wasteful number, since it uses less digits than its factorization.

79209875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21895 (or 21885 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 79209875 is about 8899.9929775253. The cubic root of 79209875 is about 429.4636814526.

The spelling of 79209875 in words is "seventy-nine million, two hundred nine thousand, eight hundred seventy-five".