512989 has 2 divisors, whose sum is σ = 512990. Its totient is φ = 512988.

The previous prime is 512977. The next prime is 512999. The reversal of 512989 is 989215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 1764 = 715^2 + 42^2 .

It is a cyclic number.

It is not a de Polignac number, because 512989 - 2¹¹ = 510941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256494 + 256495.

It is an arithmetic number, because the mean of its divisors is an integer number (256495).

2⁵¹²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

512989 is a deficient number, since it is larger than the sum of its proper divisors (1).

512989 is an equidigital number, since it uses as much as digits as its factorization.

512989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 512989 is about 716.2325041493. The cubic root of 512989 is about 80.0514772857.

The spelling of 512989 in words is "five hundred twelve thousand, nine hundred eighty-nine".