3939723 has 12 divisors (see below), whose sum is σ = 5845008. Its totient is φ = 2555280.

The previous prime is 3939721. The next prime is 3939743. The reversal of 3939723 is 3279393.

It is not a de Polignac number, because 3939723 - 2¹ = 3939721 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5583 + ... + 6248.

It is an arithmetic number, because the mean of its divisors is an integer number (487084).

Almost surely, 2^3939723 is an apocalyptic number.

3939723 is a deficient number, since it is larger than the sum of its proper divisors (1905285).

3939723 is a wasteful number, since it uses less digits than its factorization.

3939723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11874 (or 11871 counting only the distinct ones).

The product of its digits is 30618, while the sum is 36.

The square root of 3939723 is about 1984.8735476095. The cubic root of 3939723 is about 157.9387013187.

The spelling of 3939723 in words is "three million, nine hundred thirty-nine thousand, seven hundred twenty-three".