939986923 has 8 divisors (see below), whose sum is σ = 962274368. Its totient is φ = 917718984.

The previous prime is 939986917. The next prime is 939986953. The reversal of 939986923 is 329689939.

It is a happy number.

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 939986923 - 2²⁹ = 403116011 is a prime.

It is a super-2 number, since 2×939986923² = 1767150830822015858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939986903) 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, 149440 + ... + 155602.

It is an arithmetic number, because the mean of its divisors is an integer number (120284296).

Almost surely, 2^939986923 is an apocalyptic number.

939986923 is a deficient number, since it is larger than the sum of its proper divisors (22287445).

939986923 is a wasteful number, since it uses less digits than its factorization.

939986923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9753.

The product of its digits is 5668704, while the sum is 58.

The square root of 939986923 is about 30659.2061704148. The cubic root of 939986923 is about 979.5815661244.

The spelling of 939986923 in words is "nine hundred thirty-nine million, nine hundred eighty-six thousand, nine hundred twenty-three".