522388989 has 12 divisors (see below), whose sum is σ = 754825500. Its totient is φ = 348137664.

The previous prime is 522388963. The next prime is 522388991. The reversal of 522388989 is 989883225.

522388989 is a `hidden beast` number, since 522 + 38 + 8 + 9 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 516425625 = 2442^2 + 22725^2 .

It is not a de Polignac number, because 522388989 - 2⁵ = 522388957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522388589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22627 + ... + 39455.

It is an arithmetic number, because the mean of its divisors is an integer number (62902125).

Almost surely, 2^522388989 is an apocalyptic number.

It is an amenable number.

522388989 is a deficient number, since it is larger than the sum of its proper divisors (232436511).

522388989 is a wasteful number, since it uses less digits than its factorization.

522388989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20284 (or 20281 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 522388989 is about 22855.8305252730. The cubic root of 522388989 is about 805.3747411014.

The spelling of 522388989 in words is "five hundred twenty-two million, three hundred eighty-eight thousand, nine hundred eighty-nine".