478231937 has 4 divisors (see below), whose sum is σ = 478568496. Its totient is φ = 477895380.

The previous prime is 478231903. The next prime is 478231961. The reversal of 478231937 is 739132874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478231937 - 2²⁶ = 411123073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478231967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166139 + ... + 168992.

It is an arithmetic number, because the mean of its divisors is an integer number (119642124).

Almost surely, 2^478231937 is an apocalyptic number.

It is an amenable number.

478231937 is a deficient number, since it is larger than the sum of its proper divisors (336559).

478231937 is a wasteful number, since it uses less digits than its factorization.

478231937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336558.

The product of its digits is 254016, while the sum is 44.

The square root of 478231937 is about 21868.5147415182. The cubic root of 478231937 is about 782.0109936903.

The spelling of 478231937 in words is "four hundred seventy-eight million, two hundred thirty-one thousand, nine hundred thirty-seven".