439474984057 has 2 divisors, whose sum is σ = 439474984058. Its totient is φ = 439474984056.

The previous prime is 439474984031. The next prime is 439474984073. The reversal of 439474984057 is 750489474934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332168948281 + 107306035776 = 576341^2 + 327576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439474984057 is a prime.

It is a super-2 number, since 2×439474984057² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 439474984057.

It is not a weakly prime, because it can be changed into another prime (439474984007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219737492028 + 219737492029.

It is an arithmetic number, because the mean of its divisors is an integer number (219737492029).

Almost surely, 2^439474984057 is an apocalyptic number.

It is an amenable number.

439474984057 is a deficient number, since it is larger than the sum of its proper divisors (1).

439474984057 is an equidigital number, since it uses as much as digits as its factorization.

439474984057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 439474984057 in words is "four hundred thirty-nine billion, four hundred seventy-four million, nine hundred eighty-four thousand, fifty-seven".