404745233 has 2 divisors, whose sum is σ = 404745234. Its totient is φ = 404745232.

The previous prime is 404745221. The next prime is 404745241. The reversal of 404745233 is 332547404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272679169 + 132066064 = 16513^2 + 11492^2 .

It is a cyclic number.

It is not a de Polignac number, because 404745233 - 2⁴ = 404745217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404745233.

It is not a weakly prime, because it can be changed into another prime (404745293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202372616 + 202372617.

It is an arithmetic number, because the mean of its divisors is an integer number (202372617).

Almost surely, 2^404745233 is an apocalyptic number.

It is an amenable number.

404745233 is a deficient number, since it is larger than the sum of its proper divisors (1).

404745233 is an equidigital number, since it uses as much as digits as its factorization.

404745233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 404745233 is about 20118.2810647431. The cubic root of 404745233 is about 739.7084516215.

The spelling of 404745233 in words is "four hundred four million, seven hundred forty-five thousand, two hundred thirty-three".