79439802922 has 4 divisors (see below), whose sum is σ = 119159704386. Its totient is φ = 39719901460.

The previous prime is 79439802901. The next prime is 79439802941. The reversal of 79439802922 is 22920893497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22920893497 = 211 ⋅108629827.

It can be written as a sum of positive squares in only one way, i.e., 70098387121 + 9341415801 = 264761^2 + 96651^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19859950729 + ... + 19859950732.

Almost surely, 2^79439802922 is an apocalyptic number.

79439802922 is a deficient number, since it is larger than the sum of its proper divisors (39719901464).

79439802922 is a wasteful number, since it uses less digits than its factorization.

79439802922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39719901463.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 79439802922 in words is "seventy-nine billion, four hundred thirty-nine million, eight hundred two thousand, nine hundred twenty-two".