938889930 has 64 divisors (see below), whose sum is σ = 2462514048. Its totient is φ = 227208960.

The previous prime is 938889881. The next prime is 938889937. The reversal of 938889930 is 39988839.

It is not an unprimeable number, because it can be changed into a prime (938889937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213312 + ... + 217668.

It is an arithmetic number, because the mean of its divisors is an integer number (38476782).

Almost surely, 2^938889930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938889930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231257024).

938889930 is an abundant number, since it is smaller than the sum of its proper divisors (1523624118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

938889930 is a wasteful number, since it uses less digits than its factorization.

938889930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031.

The product of its (nonzero) digits is 3359232, while the sum is 57.

The square root of 938889930 is about 30641.3108401060. The cubic root of 938889930 is about 979.2003507430.

The spelling of 938889930 in words is "nine hundred thirty-eight million, eight hundred eighty-nine thousand, nine hundred thirty".