79792909 has 4 divisors (see below), whose sum is σ = 91191904. Its totient is φ = 68393916.

The previous prime is 79792903. The next prime is 79792939. The reversal of 79792909 is 90929797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79792909 - 2⁵ = 79792877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79792903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5699487 + ... + 5699500.

It is an arithmetic number, because the mean of its divisors is an integer number (22797976).

Almost surely, 2^79792909 is an apocalyptic number.

It is an amenable number.

79792909 is a deficient number, since it is larger than the sum of its proper divisors (11398995).

79792909 is a wasteful number, since it uses less digits than its factorization.

79792909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11398994.

The product of its (nonzero) digits is 642978, while the sum is 52.

The square root of 79792909 is about 8932.6876694531. The cubic root of 79792909 is about 430.5148133608.

The spelling of 79792909 in words is "seventy-nine million, seven hundred ninety-two thousand, nine hundred nine".