3972186 has 32 divisors (see below), whose sum is σ = 9348480. Its totient is φ = 1245888.

The previous prime is 3972181. The next prime is 3972187. The reversal of 3972186 is 6812793.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3972186.

It is not an unprimeable number, because it can be changed into a prime (3972181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (292140).

Almost surely, 2^3972186 is an apocalyptic number.

3972186 is an abundant number, since it is smaller than the sum of its proper divisors (5376294).

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

3972186 is a wasteful number, since it uses less digits than its factorization.

3972186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355 (or 4349 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3972186 is about 1993.0343699997. The cubic root of 3972186 is about 158.3713159722.

The spelling of 3972186 in words is "three million, nine hundred seventy-two thousand, one hundred eighty-six".