404750513 has 2 divisors, whose sum is σ = 404750514. Its totient is φ = 404750512.

The previous prime is 404750509. The next prime is 404750557. The reversal of 404750513 is 315057404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399520144 + 5230369 = 19988^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 404750513 - 2² = 404750509 is a prime.

It is not a weakly prime, because it can be changed into another prime (404750713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202375256 + 202375257.

It is an arithmetic number, because the mean of its divisors is an integer number (202375257).

Almost surely, 2^404750513 is an apocalyptic number.

It is an amenable number.

404750513 is a deficient number, since it is larger than the sum of its proper divisors (1).

404750513 is an equidigital number, since it uses as much as digits as its factorization.

404750513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 404750513 is about 20118.4122882498. The cubic root of 404750513 is about 739.7116681664.

The spelling of 404750513 in words is "four hundred four million, seven hundred fifty thousand, five hundred thirteen".