3940724 has 6 divisors (see below), whose sum is σ = 6896274. Its totient is φ = 1970360.

The previous prime is 3940721. The next prime is 3940747. The reversal of 3940724 is 4270493.

It can be written as a sum of positive squares in only one way, i.e., 2999824 + 940900 = 1732^2 + 970^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492587 + ... + 492594.

It is an arithmetic number, because the mean of its divisors is an integer number (1149379).

Almost surely, 2^3940724 is an apocalyptic number.

It is an amenable number.

3940724 is a deficient number, since it is larger than the sum of its proper divisors (2955550).

3940724 is a wasteful number, since it uses less digits than its factorization.

3940724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985185 (or 985183 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3940724 is about 1985.1256887160. The cubic root of 3940724 is about 157.9520764767.

It can be divided in two parts, 3940 and 724, that added together give a palindrome (4664).

The spelling of 3940724 in words is "three million, nine hundred forty thousand, seven hundred twenty-four".