3979740 has 48 divisors (see below), whose sum is σ = 11733120. Its totient is φ = 1005120.

The previous prime is 3979739. The next prime is 3979771. The reversal of 3979740 is 479793.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606 + ... + 2885.

It is an arithmetic number, because the mean of its divisors is an integer number (244440).

Almost surely, 2^3979740 is an apocalyptic number.

3979740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3979740 is an abundant number, since it is smaller than the sum of its proper divisors (7753380).

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

3979740 is a wasteful number, since it uses less digits than its factorization.

3979740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522 (or 3520 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 3979740 is about 1994.9285701498. The cubic root of 3979740 is about 158.4716452245.

The spelling of 3979740 in words is "three million, nine hundred seventy-nine thousand, seven hundred forty".