3974940 has 96 divisors (see below), whose sum is σ = 13124160. Its totient is φ = 995328.

The previous prime is 3974939. The next prime is 3974951. The reversal of 3974940 is 494793.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3974895 and 3974904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8964 + ... + 9396.

It is an arithmetic number, because the mean of its divisors is an integer number (136710).

Almost surely, 2^3974940 is an apocalyptic number.

3974940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3974940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6562080).

3974940 is an abundant number, since it is smaller than the sum of its proper divisors (9149220).

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

3974940 is a wasteful number, since it uses less digits than its factorization.

3974940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3974940 is about 1993.7251565850. The cubic root of 3974940 is about 158.4079082369.

The spelling of 3974940 in words is "three million, nine hundred seventy-four thousand, nine hundred forty".