79141779 has 20 divisors (see below), whose sum is σ = 121423984. Its totient is φ = 51333264.

The previous prime is 79141759. The next prime is 79141787. The reversal of 79141779 is 97714197.

It is not a de Polignac number, because 79141779 - 2⁵ = 79141747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79141759) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10207 + ... + 16200.

Almost surely, 2^79141779 is an apocalyptic number.

79141779 is a deficient number, since it is larger than the sum of its proper divisors (42282205).

79141779 is a wasteful number, since it uses less digits than its factorization.

79141779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26456 (or 26447 counting only the distinct ones).

The product of its digits is 111132, while the sum is 45.

The square root of 79141779 is about 8896.1665339628. The cubic root of 79141779 is about 429.3405775116.

The spelling of 79141779 in words is "seventy-nine million, one hundred forty-one thousand, seven hundred seventy-nine".