504690889 has 2 divisors, whose sum is σ = 504690890. Its totient is φ = 504690888.

The previous prime is 504690827. The next prime is 504690911. The reversal of 504690889 is 988096405.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313006864 + 191684025 = 17692^2 + 13845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504690889 is a prime.

It is a super-2 number, since 2×504690889² = 509425786879220642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (504694889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252345444 + 252345445.

It is an arithmetic number, because the mean of its divisors is an integer number (252345445).

Almost surely, 2^504690889 is an apocalyptic number.

It is an amenable number.

504690889 is a deficient number, since it is larger than the sum of its proper divisors (1).

504690889 is an equidigital number, since it uses as much as digits as its factorization.

504690889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 504690889 is about 22465.3263719893. The cubic root of 504690889 is about 796.1749113744.

The spelling of 504690889 in words is "five hundred four million, six hundred ninety thousand, eight hundred eighty-nine".