939806881 has 8 divisors (see below), whose sum is σ = 1044748544. Its totient is φ = 839529360.

The previous prime is 939806849. The next prime is 939806909. The reversal of 939806881 is 188608939.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 939806881 - 2⁵ = 939806849 is a prime.

It is a super-2 number, since 2×939806881² = 1766473947149896322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939816881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165611 + ... + 1166416.

It is an arithmetic number, because the mean of its divisors is an integer number (130593568).

Almost surely, 2^939806881 is an apocalyptic number.

It is an amenable number.

939806881 is a deficient number, since it is larger than the sum of its proper divisors (104941663).

939806881 is a wasteful number, since it uses less digits than its factorization.

939806881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332071.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 939806881 is about 30656.2698481077. The cubic root of 939806881 is about 979.5190201885.

The spelling of 939806881 in words is "nine hundred thirty-nine million, eight hundred six thousand, eight hundred eighty-one".