504639423 has 24 divisors (see below), whose sum is σ = 763949360. Its totient is φ = 329229360.

The previous prime is 504639413. The next prime is 504639461. The reversal of 504639423 is 324936405.

504639423 is a `hidden beast` number, since 504 + 63 + 94 + 2 + 3 = 666.

It is not a de Polignac number, because 504639423 - 2⁵ = 504639391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504639413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55413 + ... + 63873.

Almost surely, 2^504639423 is an apocalyptic number.

504639423 is a deficient number, since it is larger than the sum of its proper divisors (259309937).

504639423 is an equidigital number, since it uses as much as digits as its factorization.

504639423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564 (or 8511 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 504639423 is about 22464.1808886948. The cubic root of 504639423 is about 796.1478470651.

The spelling of 504639423 in words is "five hundred four million, six hundred thirty-nine thousand, four hundred twenty-three".