3989218 has 8 divisors (see below), whose sum is σ = 6129900. Its totient is φ = 1945920.

The previous prime is 3989191. The next prime is 3989233. The reversal of 3989218 is 8129893.

It can be written as a sum of positive squares in 2 ways, for example, as 3583449 + 405769 = 1893^2 + 637^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24243 + ... + 24406.

Almost surely, 2^3989218 is an apocalyptic number.

3989218 is a deficient number, since it is larger than the sum of its proper divisors (2140682).

3989218 is a wasteful number, since it uses less digits than its factorization.

3989218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48692.

The product of its digits is 31104, while the sum is 40.

The square root of 3989218 is about 1997.3026811177. The cubic root of 3989218 is about 158.5973488688.

The spelling of 3989218 in words is "three million, nine hundred eighty-nine thousand, two hundred eighteen".