504639413 has 2 divisors, whose sum is σ = 504639414. Its totient is φ = 504639412.

The previous prime is 504639409. The next prime is 504639461. The reversal of 504639413 is 314936405.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504541444 + 97969 = 22462^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 504639413 - 2² = 504639409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504639613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252319706 + 252319707.

It is an arithmetic number, because the mean of its divisors is an integer number (252319707).

Almost surely, 2^504639413 is an apocalyptic number.

It is an amenable number.

504639413 is a deficient number, since it is larger than the sum of its proper divisors (1).

504639413 is an equidigital number, since it uses as much as digits as its factorization.

504639413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 504639413 is about 22464.1806661182. The cubic root of 504639413 is about 796.1478418063.

The spelling of 504639413 in words is "five hundred four million, six hundred thirty-nine thousand, four hundred thirteen".