3918972 has 12 divisors (see below), whose sum is σ = 9144296. Its totient is φ = 1306320.

The previous prime is 3918949. The next prime is 3918983. The reversal of 3918972 is 2798193.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 3918972.

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, 163279 + ... + 163302.

Almost surely, 2^3918972 is an apocalyptic number.

It is an amenable number.

3918972 is an abundant number, since it is smaller than the sum of its proper divisors (5225324).

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

3918972 is a wasteful number, since it uses less digits than its factorization.

3918972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326588 (or 326586 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 3918972 is about 1979.6393610959. The cubic root of 3918972 is about 157.6609189283.

The spelling of 3918972 in words is "three million, nine hundred eighteen thousand, nine hundred seventy-two".