904890361 has 2 divisors, whose sum is σ = 904890362. Its totient is φ = 904890360.

The previous prime is 904890307. The next prime is 904890379. The reversal of 904890361 is 163098409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657614736 + 247275625 = 25644^2 + 15725^2 .

It is a cyclic number.

It is not a de Polignac number, because 904890361 - 2²⁵ = 871335929 is a prime.

It is not a weakly prime, because it can be changed into another prime (904890661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452445180 + 452445181.

It is an arithmetic number, because the mean of its divisors is an integer number (452445181).

Almost surely, 2^904890361 is an apocalyptic number.

It is an amenable number.

904890361 is a deficient number, since it is larger than the sum of its proper divisors (1).

904890361 is an equidigital number, since it uses as much as digits as its factorization.

904890361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 904890361 is about 30081.3955959493. The cubic root of 904890361 is about 967.2349643823.

The spelling of 904890361 in words is "nine hundred four million, eight hundred ninety thousand, three hundred sixty-one".