3939631 has 8 divisors (see below), whose sum is σ = 4391280. Its totient is φ = 3512448.

The previous prime is 3939619. The next prime is 3939641. The reversal of 3939631 is 1369393.

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 3939631 - 2¹³ = 3931439 is a prime.

It is a super-2 number, since 2×3939631² = 31041384832322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939641) 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, 5776 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (548910).

Almost surely, 2^3939631 is an apocalyptic number.

3939631 is a deficient number, since it is larger than the sum of its proper divisors (451649).

3939631 is a wasteful number, since it uses less digits than its factorization.

3939631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233.

The product of its digits is 13122, while the sum is 34.

The square root of 3939631 is about 1984.8503721943. The cubic root of 3939631 is about 157.9374719198.

The spelling of 3939631 in words is "three million, nine hundred thirty-nine thousand, six hundred thirty-one".