475569979 has 2 divisors, whose sum is σ = 475569980. Its totient is φ = 475569978.

The previous prime is 475569959. The next prime is 475570003. The reversal of 475569979 is 979965574.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 475569979 - 2⁷ = 475569851 is a prime.

It is not a weakly prime, because it can be changed into another prime (475569929) 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, 237784989 + 237784990.

It is an arithmetic number, because the mean of its divisors is an integer number (237784990).

Almost surely, 2^475569979 is an apocalyptic number.

475569979 is a deficient number, since it is larger than the sum of its proper divisors (1).

475569979 is an equidigital number, since it uses as much as digits as its factorization.

475569979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21432600, while the sum is 61.

The square root of 475569979 is about 21807.5670123927. The cubic root of 475569979 is about 780.5573372588.

The spelling of 475569979 in words is "four hundred seventy-five million, five hundred sixty-nine thousand, nine hundred seventy-nine".