3972884 has 18 divisors (see below), whose sum is σ = 7206654. Its totient is φ = 1916320.

The previous prime is 3972877. The next prime is 3972901. The reversal of 3972884 is 4882793.

It can be written as a sum of positive squares in 3 ways, for example, as 1507984 + 2464900 = 1228^2 + 1570^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2774 + ... + 3954.

Almost surely, 2^3972884 is an apocalyptic number.

It is an amenable number.

3972884 is a deficient number, since it is larger than the sum of its proper divisors (3233770).

3972884 is a wasteful number, since it uses less digits than its factorization.

3972884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243 (or 1212 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 3972884 is about 1993.2094721830. The cubic root of 3972884 is about 158.3805918642.

Subtracting 3972884 from its reverse (4882793), we obtain a palindrome (909909).

The spelling of 3972884 in words is "three million, nine hundred seventy-two thousand, eight hundred eighty-four".