478930979 has 2 divisors, whose sum is σ = 478930980. Its totient is φ = 478930978.

The previous prime is 478930957. The next prime is 478930993. The reversal of 478930979 is 979039874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478930979 - 2⁸ = 478930723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (478900979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239465489 + 239465490.

It is an arithmetic number, because the mean of its divisors is an integer number (239465490).

Almost surely, 2^478930979 is an apocalyptic number.

478930979 is a deficient number, since it is larger than the sum of its proper divisors (1).

478930979 is an equidigital number, since it uses as much as digits as its factorization.

478930979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 478930979 is about 21884.4917464400. The cubic root of 478930979 is about 782.3918356686.

The spelling of 478930979 in words is "four hundred seventy-eight million, nine hundred thirty thousand, nine hundred seventy-nine".