503989 has 2 divisors, whose sum is σ = 503990. Its totient is φ = 503988.

The previous prime is 503983. The next prime is 504001. The reversal of 503989 is 989305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476100 + 27889 = 690^2 + 167^2 .

It is a cyclic number.

It is not a de Polignac number, because 503989 - 2¹³ = 495797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251994 + 251995.

It is an arithmetic number, because the mean of its divisors is an integer number (251995).

2⁵⁰³⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

503989 is a deficient number, since it is larger than the sum of its proper divisors (1).

503989 is an equidigital number, since it uses as much as digits as its factorization.

503989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 503989 is about 709.9218266823. The cubic root of 503989 is about 79.5805651904.

The spelling of 503989 in words is "five hundred three thousand, nine hundred eighty-nine".