3972445 has 8 divisors (see below), whose sum is σ = 4974336. Its totient is φ = 3039696.

The previous prime is 3972439. The next prime is 3972467. The reversal of 3972445 is 5442793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3972445 - 2⁵ = 3972413 is a prime.

It is a Duffinian number.

3972445 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3972445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17157 + ... + 17386.

It is an arithmetic number, because the mean of its divisors is an integer number (621792).

Almost surely, 2^3972445 is an apocalyptic number.

It is an amenable number.

3972445 is a deficient number, since it is larger than the sum of its proper divisors (1001891).

3972445 is a wasteful number, since it uses less digits than its factorization.

3972445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34571.

The product of its digits is 30240, while the sum is 34.

The square root of 3972445 is about 1993.0993452410. The cubic root of 3972445 is about 158.3747580131.

The spelling of 3972445 in words is "three million, nine hundred seventy-two thousand, four hundred forty-five".