82968979 has 4 divisors (see below), whose sum is σ = 83268784. Its totient is φ = 82669176.

The previous prime is 82968943. The next prime is 82968983. The reversal of 82968979 is 97986928.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82968979 - 2¹¹ = 82966931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82968779) 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, 149487 + ... + 150040.

It is an arithmetic number, because the mean of its divisors is an integer number (20817196).

Almost surely, 2^82968979 is an apocalyptic number.

82968979 is a deficient number, since it is larger than the sum of its proper divisors (299805).

82968979 is a wasteful number, since it uses less digits than its factorization.

82968979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299804.

The product of its digits is 3919104, while the sum is 58.

The square root of 82968979 is about 9108.7309214841. The cubic root of 82968979 is about 436.1527166813.

The spelling of 82968979 in words is "eighty-two million, nine hundred sixty-eight thousand, nine hundred seventy-nine".