3939992 has 72 divisors (see below), whose sum is σ = 9456300. Its totient is φ = 1530144.

The previous prime is 3939989. The next prime is 3939997. The reversal of 3939992 is 2999393.

3939992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939997) 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 17 ways as a sum of consecutive naturals, for example, 171293 + ... + 171315.

Almost surely, 2^3939992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3939992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4728150).

3939992 is an abundant number, since it is smaller than the sum of its proper divisors (5516308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3939992 is a wasteful number, since it uses less digits than its factorization.

3939992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 51 counting only the distinct ones).

The product of its digits is 118098, while the sum is 44.

The square root of 3939992 is about 1984.9413089560. The cubic root of 3939992 is about 157.9422958645.

The spelling of 3939992 in words is "three million, nine hundred thirty-nine thousand, nine hundred ninety-two".