3945408 has 28 divisors (see below), whose sum is σ = 10439400. Its totient is φ = 1315072.

The previous prime is 3945391. The next prime is 3945413. The reversal of 3945408 is 8045493.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10083 + ... + 10466.

Almost surely, 2^3945408 is an apocalyptic number.

It is an amenable number.

3945408 is an abundant number, since it is smaller than the sum of its proper divisors (6493992).

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

3945408 is a wasteful number, since it uses less digits than its factorization.

3945408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20564 (or 20554 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 3945408 is about 1986.3051125142. The cubic root of 3945408 is about 158.0146330516.

The spelling of 3945408 in words is "three million, nine hundred forty-five thousand, four hundred eight".