904880689 has 2 divisors, whose sum is σ = 904880690. Its totient is φ = 904880688.

The previous prime is 904880677. The next prime is 904880723. The reversal of 904880689 is 986088409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660490000 + 244390689 = 25700^2 + 15633^2 .

It is a cyclic number.

It is not a de Polignac number, because 904880689 - 2¹³ = 904872497 is a prime.

It is a super-2 number, since 2×904880689² = 1637618122650229442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (904880629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452440344 + 452440345.

It is an arithmetic number, because the mean of its divisors is an integer number (452440345).

Almost surely, 2^904880689 is an apocalyptic number.

It is an amenable number.

904880689 is a deficient number, since it is larger than the sum of its proper divisors (1).

904880689 is an equidigital number, since it uses as much as digits as its factorization.

904880689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 52.

The square root of 904880689 is about 30081.2348317020. The cubic root of 904880689 is about 967.2315182448.

The spelling of 904880689 in words is "nine hundred four million, eight hundred eighty thousand, six hundred eighty-nine".