7669979 has 2 divisors, whose sum is σ = 7669980. Its totient is φ = 7669978.

The previous prime is 7669967. The next prime is 7670021. The reversal of 7669979 is 9799667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7669979 - 2⁸ = 7669723 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7669979.

It is not a weakly prime, because it can be changed into another prime (7669279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3834989 + 3834990.

It is an arithmetic number, because the mean of its divisors is an integer number (3834990).

Almost surely, 2^7669979 is an apocalyptic number.

7669979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7669979 is an equidigital number, since it uses as much as digits as its factorization.

7669979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 53.

The square root of 7669979 is about 2769.4726934924. The cubic root of 7669979 is about 197.2111164046.

The spelling of 7669979 in words is "seven million, six hundred sixty-nine thousand, nine hundred seventy-nine".