7979131 has 2 divisors, whose sum is σ = 7979132. Its totient is φ = 7979130.

The previous prime is 7979129. The next prime is 7979141. The reversal of 7979131 is 1319797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7979131 - 2¹ = 7979129 is a prime.

It is a super-2 number, since 2×7979131² = 127333063030322, which contains 22 as substring.

Together with 7979129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7979141) 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 as a sum of consecutive naturals, namely, 3989565 + 3989566.

It is an arithmetic number, because the mean of its divisors is an integer number (3989566).

Almost surely, 2^7979131 is an apocalyptic number.

7979131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7979131 is an equidigital number, since it uses as much as digits as its factorization.

7979131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11907, while the sum is 37.

The square root of 7979131 is about 2824.7355628448. The cubic root of 7979131 is about 199.8259402266.

The spelling of 7979131 in words is "seven million, nine hundred seventy-nine thousand, one hundred thirty-one".