502904869 has 2 divisors, whose sum is σ = 502904870. Its totient is φ = 502904868.

The previous prime is 502904861. The next prime is 502904891. The reversal of 502904869 is 968409205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 463842369 + 39062500 = 21537^2 + 6250^2 .

It is a cyclic number.

It is not a de Polignac number, because 502904869 - 2³ = 502904861 is a prime.

It is a super-2 number, since 2×502904869² = 505826614527814322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502904861) 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, 251452434 + 251452435.

It is an arithmetic number, because the mean of its divisors is an integer number (251452435).

Almost surely, 2^502904869 is an apocalyptic number.

It is an amenable number.

502904869 is a deficient number, since it is larger than the sum of its proper divisors (1).

502904869 is an equidigital number, since it uses as much as digits as its factorization.

502904869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 502904869 is about 22425.5405508987. The cubic root of 502904869 is about 795.2346229436.

The spelling of 502904869 in words is "five hundred two million, nine hundred four thousand, eight hundred sixty-nine".