3974905 has 8 divisors (see below), whose sum is σ = 5203584. Its totient is φ = 2890800.

The previous prime is 3974897. The next prime is 3974911. The reversal of 3974905 is 5094793.

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

It is not a de Polignac number, because 3974905 - 2³ = 3974897 is a prime.

It is a Duffinian number.

3974905 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36081 + ... + 36190.

It is an arithmetic number, because the mean of its divisors is an integer number (650448).

Almost surely, 2^3974905 is an apocalyptic number.

It is an amenable number.

3974905 is a deficient number, since it is larger than the sum of its proper divisors (1228679).

3974905 is a wasteful number, since it uses less digits than its factorization.

3974905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72287.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 3974905 is about 1993.7163790269. The cubic root of 3974905 is about 158.4074432997.

The spelling of 3974905 in words is "three million, nine hundred seventy-four thousand, nine hundred five".