478772579 has 2 divisors, whose sum is σ = 478772580. Its totient is φ = 478772578.

The previous prime is 478772549. The next prime is 478772641. The reversal of 478772579 is 975277874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478772579 is a prime.

It is a super-2 number, since 2×478772579² = 458446364804622482, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (478772549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239386289 + 239386290.

It is an arithmetic number, because the mean of its divisors is an integer number (239386290).

Almost surely, 2^478772579 is an apocalyptic number.

478772579 is a deficient number, since it is larger than the sum of its proper divisors (1).

478772579 is an equidigital number, since it uses as much as digits as its factorization.

478772579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6914880, while the sum is 56.

The square root of 478772579 is about 21880.8724460429. The cubic root of 478772579 is about 782.3055709544.

The spelling of 478772579 in words is "four hundred seventy-eight million, seven hundred seventy-two thousand, five hundred seventy-nine".