3940864 has 40 divisors (see below), whose sum is σ = 8102160. Its totient is φ = 1913856.

The previous prime is 3940841. The next prime is 3940891. The reversal of 3940864 is 4680493.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21927 + ... + 22105.

It is an arithmetic number, because the mean of its divisors is an integer number (202554).

Almost surely, 2^3940864 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 3940864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4051080).

3940864 is an abundant number, since it is smaller than the sum of its proper divisors (4161296).

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

3940864 is an equidigital number, since it uses as much as digits as its factorization.

3940864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3940864 is about 1985.1609506536. The cubic root of 3940864 is about 157.9539469476.

The spelling of 3940864 in words is "three million, nine hundred forty thousand, eight hundred sixty-four".