84591276979 has 8 divisors (see below), whose sum is σ = 92500593840. Its totient is φ = 76718493600.

The previous prime is 84591276971. The next prime is 84591277019. The reversal of 84591276979 is 97967219548.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84591276979 - 2³ = 84591276971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84591276971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9128524 + ... + 9137785.

It is an arithmetic number, because the mean of its divisors is an integer number (11562574230).

Almost surely, 2^84591276979 is an apocalyptic number.

84591276979 is a deficient number, since it is larger than the sum of its proper divisors (7909316861).

84591276979 is a wasteful number, since it uses less digits than its factorization.

84591276979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18266741.

The product of its digits is 68584320, while the sum is 67.

The spelling of 84591276979 in words is "eighty-four billion, five hundred ninety-one million, two hundred seventy-six thousand, nine hundred seventy-nine".