3972898 has 16 divisors (see below), whose sum is σ = 6209280. Its totient is φ = 1904400.

The previous prime is 3972877. The next prime is 3972901. The reversal of 3972898 is 8982793.

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, 8388 + ... + 8848.

It is an arithmetic number, because the mean of its divisors is an integer number (388080).

Almost surely, 2^3972898 is an apocalyptic number.

3972898 is a deficient number, since it is larger than the sum of its proper divisors (2236382).

3972898 is a wasteful number, since it uses less digits than its factorization.

3972898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its digits is 217728, while the sum is 46.

The square root of 3972898 is about 1993.2129841038. The cubic root of 3972898 is about 158.3807779025.

Subtracting from 3972898 its product of digits (217728), we obtain a triangular number (3755170 = T₂₇₄₀).

The spelling of 3972898 in words is "three million, nine hundred seventy-two thousand, eight hundred ninety-eight".