3971560 has 16 divisors (see below), whose sum is σ = 8936100. Its totient is φ = 1588608.

The previous prime is 3971549. The next prime is 3971581. The reversal of 3971560 is 651793.

It can be written as a sum of positive squares in 2 ways, for example, as 3632836 + 338724 = 1906^2 + 582^2 .

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, 49605 + ... + 49684.

Almost surely, 2^3971560 is an apocalyptic number.

It is an amenable number.

3971560 is an abundant number, since it is smaller than the sum of its proper divisors (4964540).

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

3971560 is a wasteful number, since it uses less digits than its factorization.

3971560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99300 (or 99296 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 3971560 is about 1992.8773168462. The cubic root of 3971560 is about 158.3629959815.

The spelling of 3971560 in words is "three million, nine hundred seventy-one thousand, five hundred sixty".