3971604 has 48 divisors (see below), whose sum is σ = 11408768. Its totient is φ = 1047168.

The previous prime is 3971599. The next prime is 3971621. The reversal of 3971604 is 4061793.

It is a happy number.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727 + ... + 2910.

Almost surely, 2^3971604 is an apocalyptic number.

It is an amenable number.

3971604 is an abundant number, since it is smaller than the sum of its proper divisors (7437164).

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

3971604 is a wasteful number, since it uses less digits than its factorization.

3971604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3971604 is about 1992.8883561304. Note that the first 3 decimals coincide. The cubic root of 3971604 is about 158.3635808017.

The spelling of 3971604 in words is "three million, nine hundred seventy-one thousand, six hundred four".