3937939 has 8 divisors (see below), whose sum is σ = 4097520. Its totient is φ = 3780000.

The previous prime is 3937919. The next prime is 3937943. The reversal of 3937939 is 9397393.

It is a happy number.

3937939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3937939 - 2¹³ = 3929747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3937895 and 3937904.

It is not an unprimeable number, because it can be changed into a prime (3937919) 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 7 ways as a sum of consecutive naturals, for example, 7009 + ... + 7549.

It is an arithmetic number, because the mean of its divisors is an integer number (512190).

Almost surely, 2^3937939 is an apocalyptic number.

3937939 is a deficient number, since it is larger than the sum of its proper divisors (159581).

3937939 is a wasteful number, since it uses less digits than its factorization.

3937939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its digits is 137781, while the sum is 43.

The square root of 3937939 is about 1984.4240978178. The cubic root of 3937939 is about 157.9148582564.

The spelling of 3937939 in words is "three million, nine hundred thirty-seven thousand, nine hundred thirty-nine".