3939912 has 24 divisors (see below), whose sum is σ = 10670790. Its totient is φ = 1313280.

The previous prime is 3939907. The next prime is 3939917. The reversal of 3939912 is 2199393.

It is an interprime number because it is at equal distance from previous prime (3939907) and next prime (3939917).

It can be written as a sum of positive squares in only one way, i.e., 3006756 + 933156 = 1734^2 + 966^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27289 + ... + 27432.

Almost surely, 2^3939912 is an apocalyptic number.

It is an amenable number.

3939912 is an abundant number, since it is smaller than the sum of its proper divisors (6730878).

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

3939912 is a wasteful number, since it uses less digits than its factorization.

3939912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54733 (or 54726 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 3939912 is about 1984.9211571244. The cubic root of 3939912 is about 157.9412268717.

It can be divided in two parts, 3939 and 912, that added together give a triangular number (4851 = T₉₈).

The spelling of 3939912 in words is "three million, nine hundred thirty-nine thousand, nine hundred twelve".