939691312 has 80 divisors (see below), whose sum is σ = 2180574720. Its totient is φ = 383556096.

The previous prime is 939691309. The next prime is 939691343. The reversal of 939691312 is 213196939.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728364 + ... + 729652.

It is an arithmetic number, because the mean of its divisors is an integer number (27257184).

Almost surely, 2^939691312 is an apocalyptic number.

939691312 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 939691312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090287360).

939691312 is an abundant number, since it is smaller than the sum of its proper divisors (1240883408).

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

939691312 is a wasteful number, since it uses less digits than its factorization.

939691312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1604 counting only the distinct ones).

The product of its digits is 78732, while the sum is 43.

The square root of 939691312 is about 30654.3848739458. The cubic root of 939691312 is about 979.4788677286.

The spelling of 939691312 in words is "nine hundred thirty-nine million, six hundred ninety-one thousand, three hundred twelve".