79376921 has 16 divisors (see below), whose sum is σ = 87494400. Its totient is φ = 71565120.

The previous prime is 79376917. The next prime is 79376959. The reversal of 79376921 is 12967397.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79376921 - 2² = 79376917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79376911) 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, 157556 + ... + 158058.

It is an arithmetic number, because the mean of its divisors is an integer number (5468400).

Almost surely, 2^79376921 is an apocalyptic number.

It is an amenable number.

79376921 is a deficient number, since it is larger than the sum of its proper divisors (8117479).

79376921 is a wasteful number, since it uses less digits than its factorization.

79376921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its digits is 142884, while the sum is 44.

The square root of 79376921 is about 8909.3726490702. The cubic root of 79376921 is about 429.7653686606.

The spelling of 79376921 in words is "seventy-nine million, three hundred seventy-six thousand, nine hundred twenty-one".