79714809 has 12 divisors (see below), whose sum is σ = 117316836. Its totient is φ = 52140192.

The previous prime is 79714801. The next prime is 79714829. The reversal of 79714809 is 90841797.

It can be written as a sum of positive squares in 2 ways, for example, as 58064400 + 21650409 = 7620^2 + 4653^2 .

It is not a de Polignac number, because 79714809 - 2³ = 79714801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79714801) 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 11 ways as a sum of consecutive naturals, for example, 83082 + ... + 84035.

It is an arithmetic number, because the mean of its divisors is an integer number (9776403).

Almost surely, 2^79714809 is an apocalyptic number.

It is an amenable number.

79714809 is a deficient number, since it is larger than the sum of its proper divisors (37602027).

79714809 is a wasteful number, since it uses less digits than its factorization.

79714809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167176 (or 167173 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 79714809 is about 8928.3150146038. The cubic root of 79714809 is about 430.3743072128.

The spelling of 79714809 in words is "seventy-nine million, seven hundred fourteen thousand, eight hundred nine".