477131609 has 2 divisors, whose sum is σ = 477131610. Its totient is φ = 477131608.

The previous prime is 477131587. The next prime is 477131623. The reversal of 477131609 is 906131774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 405136384 + 71995225 = 20128^2 + 8485^2 .

It is a cyclic number.

It is not a de Polignac number, because 477131609 - 2⁸ = 477131353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (477131659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238565804 + 238565805.

It is an arithmetic number, because the mean of its divisors is an integer number (238565805).

Almost surely, 2^477131609 is an apocalyptic number.

It is an amenable number.

477131609 is a deficient number, since it is larger than the sum of its proper divisors (1).

477131609 is an equidigital number, since it uses as much as digits as its factorization.

477131609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 477131609 is about 21843.3424411192. The cubic root of 477131609 is about 781.4107763062.

The spelling of 477131609 in words is "four hundred seventy-seven million, one hundred thirty-one thousand, six hundred nine".