504389 has 2 divisors, whose sum is σ = 504390. Its totient is φ = 504388.

The previous prime is 504379. The next prime is 504403. The reversal of 504389 is 983405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 289 = 710^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 504389 - 2¹⁶ = 438853 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 (504349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252194 + 252195.

It is an arithmetic number, because the mean of its divisors is an integer number (252195).

2⁵⁰⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

504389 is a deficient number, since it is larger than the sum of its proper divisors (1).

504389 is an equidigital number, since it uses as much as digits as its factorization.

504389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 504389 is about 710.2034919655. The cubic root of 504389 is about 79.6016131421.

The spelling of 504389 in words is "five hundred four thousand, three hundred eighty-nine".