939868939 has 4 divisors (see below), whose sum is σ = 939961224. Its totient is φ = 939776656.

The previous prime is 939868927. The next prime is 939868949.

939868939 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 939868939 - 2⁹ = 939868427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939868949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28657 + ... + 51970.

It is an arithmetic number, because the mean of its divisors is an integer number (234990306).

Almost surely, 2^939868939 is an apocalyptic number.

939868939 is a deficient number, since it is larger than the sum of its proper divisors (92285).

939868939 is a wasteful number, since it uses less digits than its factorization.

939868939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92284.

The product of its digits is 22674816, while the sum is 64.

The square root of 939868939 is about 30657.2819897655. The cubic root of 939868939 is about 979.5405798141.

The spelling of 939868939 in words is "nine hundred thirty-nine million, eight hundred sixty-eight thousand, nine hundred thirty-nine".