3974140 has 24 divisors (see below), whose sum is σ = 8426880. Its totient is φ = 1574208.

The previous prime is 3974129. The next prime is 3974143. The reversal of 3974140 is 414793.

It is a junction number, because it is equal to n+sod(n) for n = 3974099 and 3974108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974143) 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, 1269 + ... + 3091.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

Almost surely, 2^3974140 is an apocalyptic number.

It is an amenable number.

3974140 is an abundant number, since it is smaller than the sum of its proper divisors (4452740).

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

3974140 is a wasteful number, since it uses less digits than its factorization.

3974140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3974140 is about 1993.5245170301. The cubic root of 3974140 is about 158.3972804179.

It can be divided in two parts, 3974 and 140, that added together give a palindrome (4114).

The spelling of 3974140 in words is "three million, nine hundred seventy-four thousand, one hundred forty".