3972489 has 8 divisors (see below), whose sum is σ = 5332800. Its totient is φ = 2630256.

The previous prime is 3972467. The next prime is 3972499. The reversal of 3972489 is 9842793.

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

It is not a de Polignac number, because 3972489 - 2⁸ = 3972233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3972489.

It is not an unprimeable number, because it can be changed into a prime (3972439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3997 + ... + 4890.

It is an arithmetic number, because the mean of its divisors is an integer number (666600).

Almost surely, 2^3972489 is an apocalyptic number.

It is an amenable number.

3972489 is a deficient number, since it is larger than the sum of its proper divisors (1360311).

3972489 is a wasteful number, since it uses less digits than its factorization.

3972489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039.

The product of its digits is 108864, while the sum is 42.

The square root of 3972489 is about 1993.1103832954. The cubic root of 3972489 is about 158.3753427465.

The spelling of 3972489 in words is "three million, nine hundred seventy-two thousand, four hundred eighty-nine".