3974440 has 32 divisors (see below), whose sum is σ = 9082080. Its totient is φ = 1564992.

The previous prime is 3974437. The next prime is 3974441. The reversal of 3974440 is 444793.

It is not an unprimeable number, because it can be changed into a prime (3974441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939 + ... + 3421.

It is an arithmetic number, because the mean of its divisors is an integer number (283815).

Almost surely, 2^3974440 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 3974440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4541040).

3974440 is an abundant number, since it is smaller than the sum of its proper divisors (5107640).

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

3974440 is a wasteful number, since it uses less digits than its factorization.

3974440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 3974440 is about 1993.5997592295. The cubic root of 3974440 is about 158.4012660172.

The spelling of 3974440 in words is "three million, nine hundred seventy-four thousand, four hundred forty".