439464316657 has 2 divisors, whose sum is σ = 439464316658. Its totient is φ = 439464316656.

The previous prime is 439464316619. The next prime is 439464316723. The reversal of 439464316657 is 756613464934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421407407281 + 18056909376 = 649159^2 + 134376^2 .

It is a cyclic number.

It is not a de Polignac number, because 439464316657 - 2³⁵ = 405104578289 is a prime.

It is a super-2 number, since 2×439464316657² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (439464316607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219732158328 + 219732158329.

It is an arithmetic number, because the mean of its divisors is an integer number (219732158329).

Almost surely, 2^439464316657 is an apocalyptic number.

It is an amenable number.

439464316657 is a deficient number, since it is larger than the sum of its proper divisors (1).

439464316657 is an equidigital number, since it uses as much as digits as its factorization.

439464316657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 58.

The spelling of 439464316657 in words is "four hundred thirty-nine billion, four hundred sixty-four million, three hundred sixteen thousand, six hundred fifty-seven".