8113979 has 2 divisors, whose sum is σ = 8113980. Its totient is φ = 8113978.

The previous prime is 8113967. The next prime is 8113993. The reversal of 8113979 is 9793118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8113979 - 2¹² = 8109883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8113999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056989 + 4056990.

It is an arithmetic number, because the mean of its divisors is an integer number (4056990).

Almost surely, 2^8113979 is an apocalyptic number.

8113979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8113979 is an equidigital number, since it uses as much as digits as its factorization.

8113979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 8113979 is about 2848.5046954499. The cubic root of 8113979 is about 200.9453495309.

It can be divided in two parts, 81139 and 79, that added together give a palindrome (81218).

The spelling of 8113979 in words is "eight million, one hundred thirteen thousand, nine hundred seventy-nine".