504329989 has 2 divisors, whose sum is σ = 504329990. Its totient is φ = 504329988.

The previous prime is 504329983. The next prime is 504330019. The reversal of 504329989 is 989923405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412496100 + 91833889 = 20310^2 + 9583^2 .

It is a cyclic number.

It is not a de Polignac number, because 504329989 - 2²¹ = 502232837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504329983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252164994 + 252164995.

It is an arithmetic number, because the mean of its divisors is an integer number (252164995).

Almost surely, 2^504329989 is an apocalyptic number.

It is an amenable number.

504329989 is a deficient number, since it is larger than the sum of its proper divisors (1).

504329989 is an equidigital number, since it uses as much as digits as its factorization.

504329989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 504329989 is about 22457.2925572073. The cubic root of 504329989 is about 795.9850869027.

The spelling of 504329989 in words is "five hundred four million, three hundred twenty-nine thousand, nine hundred eighty-nine".