476738993 has 2 divisors, whose sum is σ = 476738994. Its totient is φ = 476738992.

The previous prime is 476738959. The next prime is 476739017. The reversal of 476738993 is 399837674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267878689 + 208860304 = 16367^2 + 14452^2 .

It is a cyclic number.

It is not a de Polignac number, because 476738993 - 2¹⁰ = 476737969 is a prime.

It is not a weakly prime, because it can be changed into another prime (476738903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238369496 + 238369497.

It is an arithmetic number, because the mean of its divisors is an integer number (238369497).

Almost surely, 2^476738993 is an apocalyptic number.

It is an amenable number.

476738993 is a deficient number, since it is larger than the sum of its proper divisors (1).

476738993 is an equidigital number, since it uses as much as digits as its factorization.

476738993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 56.

The square root of 476738993 is about 21834.3535054281. The cubic root of 476738993 is about 781.1963850310.

The spelling of 476738993 in words is "four hundred seventy-six million, seven hundred thirty-eight thousand, nine hundred ninety-three".