938593989 has 12 divisors (see below), whose sum is σ = 1368910816. Its totient is φ = 619653672.

The previous prime is 938593979. The next prime is 938593991. The reversal of 938593989 is 989395839.

938593989 is a `hidden beast` number, since 9 + 38 + 593 + 9 + 8 + 9 = 666.

It is not a de Polignac number, because 938593989 - 2⁴ = 938593973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938593949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505327 + ... + 507180.

Almost surely, 2^938593989 is an apocalyptic number.

It is an amenable number.

938593989 is a deficient number, since it is larger than the sum of its proper divisors (430316827).

938593989 is a wasteful number, since it uses less digits than its factorization.

938593989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012616 (or 1012613 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 63.

The square root of 938593989 is about 30636.4813416946. The cubic root of 938593989 is about 979.0974576086.

The spelling of 938593989 in words is "nine hundred thirty-eight million, five hundred ninety-three thousand, nine hundred eighty-nine".