938845989 has 12 divisors (see below), whose sum is σ = 1356718272. Its totient is φ = 625617000.

The previous prime is 938845969. The next prime is 938845997. The reversal of 938845989 is 989548839.

938845989 is a `hidden beast` number, since 9 + 38 + 8 + 4 + 598 + 9 = 666.

It is not a de Polignac number, because 938845989 - 2⁹ = 938845477 is a prime.

It is a super-2 number, since 2×938845989² = 1762863582122776242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (938845939) 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, 1027 + ... + 43344.

It is an arithmetic number, because the mean of its divisors is an integer number (113059856).

Almost surely, 2^938845989 is an apocalyptic number.

It is an amenable number.

938845989 is a deficient number, since it is larger than the sum of its proper divisors (417872283).

938845989 is a wasteful number, since it uses less digits than its factorization.

938845989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46728 (or 46725 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The square root of 938845989 is about 30640.5938095201. The cubic root of 938845989 is about 979.1850746486.

The spelling of 938845989 in words is "nine hundred thirty-eight million, eight hundred forty-five thousand, nine hundred eighty-nine".