3972843 has 24 divisors (see below), whose sum is σ = 6905600. Its totient is φ = 2150064.

The previous prime is 3972841. The next prime is 3972851. The reversal of 3972843 is 3482793.

It is not a de Polignac number, because 3972843 - 2¹ = 3972841 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3972798 and 3972807.

It is not an unprimeable number, because it can be changed into a prime (3972841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463 + ... + 2856.

Almost surely, 2^3972843 is an apocalyptic number.

3972843 is a deficient number, since it is larger than the sum of its proper divisors (2932757).

3972843 is a wasteful number, since it uses less digits than its factorization.

3972843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351 (or 3348 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 3972843 is about 1993.1991872364. The cubic root of 3972843 is about 158.3800470352.

It can be divided in two parts, 397 and 2843, that added together give a triangular number (3240 = T₈₀).

The spelling of 3972843 in words is "three million, nine hundred seventy-two thousand, eight hundred forty-three".