475798979 has 2 divisors, whose sum is σ = 475798980. Its totient is φ = 475798978.

The previous prime is 475798927. The next prime is 475798987. The reversal of 475798979 is 979897574.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475798979 is a prime.

It is not a weakly prime, because it can be changed into another prime (475798879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237899489 + 237899490.

It is an arithmetic number, because the mean of its divisors is an integer number (237899490).

Almost surely, 2^475798979 is an apocalyptic number.

475798979 is a deficient number, since it is larger than the sum of its proper divisors (1).

475798979 is an equidigital number, since it uses as much as digits as its factorization.

475798979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 65.

The square root of 475798979 is about 21812.8168515669. The cubic root of 475798979 is about 780.6826037497.

It can be divided in two parts, 475 and 798979, that multiplied together give a triangular number (379515025 = T₂₇₅₅₀).

The spelling of 475798979 in words is "four hundred seventy-five million, seven hundred ninety-eight thousand, nine hundred seventy-nine".