939631 has 8 divisors (see below), whose sum is σ = 1171584. Its totient is φ = 732120.

The previous prime is 939623. The next prime is 939649. The reversal of 939631 is 136939.

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 939631 - 2³ = 939623 is a prime.

It is a super-2 number, since 2×939631² = 1765812832322, which contains 22 as substring.

It is a Duffinian number.

939631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 939593 and 939602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6025 + ... + 6178.

It is an arithmetic number, because the mean of its divisors is an integer number (146448).

2⁹³⁹⁶³¹ is an apocalyptic number.

939631 is a deficient number, since it is larger than the sum of its proper divisors (231953).

939631 is a wasteful number, since it uses less digits than its factorization.

939631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221.

The product of its digits is 4374, while the sum is 31.

The square root of 939631 is about 969.3456555842. The cubic root of 939631 is about 97.9457912055.

The spelling of 939631 in words is "nine hundred thirty-nine thousand, six hundred thirty-one".