404974057 has 2 divisors, whose sum is σ = 404974058. Its totient is φ = 404974056.

The previous prime is 404974019. The next prime is 404974081. The reversal of 404974057 is 750479404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404371881 + 602176 = 20109^2 + 776^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404974057 is a prime.

It is not a weakly prime, because it can be changed into another prime (404974957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202487028 + 202487029.

It is an arithmetic number, because the mean of its divisors is an integer number (202487029).

Almost surely, 2^404974057 is an apocalyptic number.

It is an amenable number.

404974057 is a deficient number, since it is larger than the sum of its proper divisors (1).

404974057 is an equidigital number, since it uses as much as digits as its factorization.

404974057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 404974057 is about 20123.9672281586. The cubic root of 404974057 is about 739.8478241989.

The spelling of 404974057 in words is "four hundred four million, nine hundred seventy-four thousand, fifty-seven".