939391085 has 8 divisors (see below), whose sum is σ = 1130501400. Its totient is φ = 749358144.

The previous prime is 939391081. The next prime is 939391087. The reversal of 939391085 is 580193939.

It can be written as a sum of positive squares in 4 ways, for example, as 48846121 + 890544964 = 6989^2 + 29842^2 .

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 939391085 - 2² = 939391081 is a prime.

It is a super-2 number, since 2×939391085² = 1764911221154954450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939391081) 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, 267422 + ... + 270911.

It is an arithmetic number, because the mean of its divisors is an integer number (141312675).

Almost surely, 2^939391085 is an apocalyptic number.

It is an amenable number.

939391085 is a deficient number, since it is larger than the sum of its proper divisors (191110315).

939391085 is a wasteful number, since it uses less digits than its factorization.

939391085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538687.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 939391085 is about 30649.4875161070. The cubic root of 939391085 is about 979.3745436379.

The spelling of 939391085 in words is "nine hundred thirty-nine million, three hundred ninety-one thousand, eighty-five".