404974957 has 2 divisors, whose sum is σ = 404974958. Its totient is φ = 404974956.

The previous prime is 404974907. The next prime is 404974963. The reversal of 404974957 is 759479404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401361156 + 3613801 = 20034^2 + 1901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404974957 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404974957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404974907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202487478 + 202487479.

It is an arithmetic number, because the mean of its divisors is an integer number (202487479).

Almost surely, 2^404974957 is an apocalyptic number.

It is an amenable number.

404974957 is a deficient number, since it is larger than the sum of its proper divisors (1).

404974957 is an equidigital number, since it uses as much as digits as its factorization.

404974957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 404974957 is about 20123.9895895421. The cubic root of 404974957 is about 739.8483722690.

It can be divided in two parts, 40497 and 4957, that added together give a palindrome (45454).

The spelling of 404974957 in words is "four hundred four million, nine hundred seventy-four thousand, nine hundred fifty-seven".