3974181 has 8 divisors (see below), whose sum is σ = 5388960. Its totient is φ = 2604432.

The previous prime is 3974177. The next prime is 3974197. The reversal of 3974181 is 1814793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3974181 - 2² = 3974177 is a prime.

It is a super-2 number, since 2×3974181² = 31588229241522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974681) 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, 11050 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (673620).

Almost surely, 2^3974181 is an apocalyptic number.

It is an amenable number.

3974181 is a deficient number, since it is larger than the sum of its proper divisors (1414779).

3974181 is a wasteful number, since it uses less digits than its factorization.

3974181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22515.

The product of its digits is 6048, while the sum is 33.

The square root of 3974181 is about 1993.5348002982. The cubic root of 3974181 is about 158.3978251283.

The spelling of 3974181 in words is "three million, nine hundred seventy-four thousand, one hundred eighty-one".