478308957 has 32 divisors (see below), whose sum is σ = 773068032. Its totient is φ = 256794624.

The previous prime is 478308949. The next prime is 478308967. The reversal of 478308957 is 759803874.

It is not a de Polignac number, because 478308957 - 2³ = 478308949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478308967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368133 + ... + 369429.

It is an arithmetic number, because the mean of its divisors is an integer number (24158376).

Almost surely, 2^478308957 is an apocalyptic number.

It is an amenable number.

478308957 is a deficient number, since it is larger than the sum of its proper divisors (294759075).

478308957 is a wasteful number, since it uses less digits than its factorization.

478308957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The square root of 478308957 is about 21870.2756498404. The cubic root of 478308957 is about 782.0529728006.

The spelling of 478308957 in words is "four hundred seventy-eight million, three hundred eight thousand, nine hundred fifty-seven".