477969979 has 2 divisors, whose sum is σ = 477969980. Its totient is φ = 477969978.

The previous prime is 477969971. The next prime is 477970001. The reversal of 477969979 is 979969774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 477969979 - 2³ = 477969971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (477969971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238984989 + 238984990.

It is an arithmetic number, because the mean of its divisors is an integer number (238984990).

Almost surely, 2^477969979 is an apocalyptic number.

477969979 is a deficient number, since it is larger than the sum of its proper divisors (1).

477969979 is an equidigital number, since it uses as much as digits as its factorization.

477969979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54010152, while the sum is 67.

The square root of 477969979 is about 21862.5245340057. The cubic root of 477969979 is about 781.8681819183.

It can be divided in two parts, 47796 and 9979, that added together give a palindrome (57775).

The spelling of 477969979 in words is "four hundred seventy-seven million, nine hundred sixty-nine thousand, nine hundred seventy-nine".