476957891 has 4 divisors (see below), whose sum is σ = 477929784. Its totient is φ = 475986000.

The previous prime is 476957857. The next prime is 476957917. The reversal of 476957891 is 198759674.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-476957891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (476057891) 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, 485210 + ... + 486191.

It is an arithmetic number, because the mean of its divisors is an integer number (119482446).

Almost surely, 2^476957891 is an apocalyptic number.

476957891 is a deficient number, since it is larger than the sum of its proper divisors (971893).

476957891 is an equidigital number, since it uses as much as digits as its factorization.

476957891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971892.

The product of its digits is 3810240, while the sum is 56.

The square root of 476957891 is about 21839.3656272338. The cubic root of 476957891 is about 781.3159306407.

The spelling of 476957891 in words is "four hundred seventy-six million, nine hundred fifty-seven thousand, eight hundred ninety-one".