478979807 has 4 divisors (see below), whose sum is σ = 499805040. Its totient is φ = 458154576.

The previous prime is 478979801. The next prime is 478979843. The reversal of 478979807 is 708979874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478979807 - 2⁸ = 478979551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478979801) 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 in 3 ways as a sum of consecutive naturals, for example, 10412582 + ... + 10412627.

It is an arithmetic number, because the mean of its divisors is an integer number (124951260).

Almost surely, 2^478979807 is an apocalyptic number.

478979807 is a deficient number, since it is larger than the sum of its proper divisors (20825233).

478979807 is a wasteful number, since it uses less digits than its factorization.

478979807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20825232.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The square root of 478979807 is about 21885.6073025173. The cubic root of 478979807 is about 782.4184235849.

The spelling of 478979807 in words is "four hundred seventy-eight million, nine hundred seventy-nine thousand, eight hundred seven".