3974145 has 24 divisors (see below), whose sum is σ = 7398144. Its totient is φ = 1816416.

The previous prime is 3974143. The next prime is 3974167. The reversal of 3974145 is 5414793.

It is not a de Polignac number, because 3974145 - 2¹ = 3974143 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 1969 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (308256).

Almost surely, 2^3974145 is an apocalyptic number.

3974145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3974145 is a deficient number, since it is larger than the sum of its proper divisors (3423999).

3974145 is a wasteful number, since it uses less digits than its factorization.

3974145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429 (or 5422 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 3974145 is about 1993.5257710900. The cubic root of 3974145 is about 158.3973468462.

The spelling of 3974145 in words is "three million, nine hundred seventy-four thousand, one hundred forty-five".