476899721 has 2 divisors, whose sum is σ = 476899722. Its totient is φ = 476899720.

The previous prime is 476899673. The next prime is 476899739. The reversal of 476899721 is 127998674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476767225 + 132496 = 21835^2 + 364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-476899721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (476899021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238449860 + 238449861.

It is an arithmetic number, because the mean of its divisors is an integer number (238449861).

Almost surely, 2^476899721 is an apocalyptic number.

It is an amenable number.

476899721 is a deficient number, since it is larger than the sum of its proper divisors (1).

476899721 is an equidigital number, since it uses as much as digits as its factorization.

476899721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The square root of 476899721 is about 21838.0338171732. The cubic root of 476899721 is about 781.2841661346.

The spelling of 476899721 in words is "four hundred seventy-six million, eight hundred ninety-nine thousand, seven hundred twenty-one".