479731709 has 2 divisors, whose sum is σ = 479731710. Its totient is φ = 479731708.

The previous prime is 479731699. The next prime is 479731739. The reversal of 479731709 is 907137974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475109209 + 4622500 = 21797^2 + 2150^2 .

It is a cyclic number.

It is not a de Polignac number, because 479731709 - 2¹² = 479727613 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479731739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239865854 + 239865855.

It is an arithmetic number, because the mean of its divisors is an integer number (239865855).

Almost surely, 2^479731709 is an apocalyptic number.

It is an amenable number.

479731709 is a deficient number, since it is larger than the sum of its proper divisors (1).

479731709 is an equidigital number, since it uses as much as digits as its factorization.

479731709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 479731709 is about 21902.7785680265. The cubic root of 479731709 is about 782.8276227471.

The spelling of 479731709 in words is "four hundred seventy-nine million, seven hundred thirty-one thousand, seven hundred nine".