404975399 has 2 divisors, whose sum is σ = 404975400. Its totient is φ = 404975398.

The previous prime is 404975393. The next prime is 404975407. The reversal of 404975399 is 993579404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404975399 - 2⁴ = 404975383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404975393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202487699 + 202487700.

It is an arithmetic number, because the mean of its divisors is an integer number (202487700).

Almost surely, 2^404975399 is an apocalyptic number.

404975399 is a deficient number, since it is larger than the sum of its proper divisors (1).

404975399 is an equidigital number, since it uses as much as digits as its factorization.

404975399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The square root of 404975399 is about 20124.0005714570. Note that the first 3 decimals coincide. The cubic root of 404975399 is about 739.8486414320.

The spelling of 404975399 in words is "four hundred four million, nine hundred seventy-five thousand, three hundred ninety-nine".