8971979 has 2 divisors, whose sum is σ = 8971980. Its totient is φ = 8971978.

The previous prime is 8971973. The next prime is 8972023. The reversal of 8971979 is 9791798.

8971979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8971979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8971973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4485989 + 4485990.

It is an arithmetic number, because the mean of its divisors is an integer number (4485990).

Almost surely, 2^8971979 is an apocalyptic number.

8971979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8971979 is an equidigital number, since it uses as much as digits as its factorization.

8971979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 50.

The square root of 8971979 is about 2995.3261925874. The cubic root of 8971979 is about 207.7922836987.

It can be divided in two parts, 89719 and 79, that added together give a palindrome (89798).

The spelling of 8971979 in words is "eight million, nine hundred seventy-one thousand, nine hundred seventy-nine".