3897189 has 24 divisors (see below), whose sum is σ = 5982912. Its totient is φ = 2439360.

The previous prime is 3897181. The next prime is 3897191. The reversal of 3897189 is 9817983.

It is not a de Polignac number, because 3897189 - 2³ = 3897181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897181) 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, 13729 + ... + 14009.

It is an arithmetic number, because the mean of its divisors is an integer number (249288).

Almost surely, 2^3897189 is an apocalyptic number.

It is an amenable number.

3897189 is a deficient number, since it is larger than the sum of its proper divisors (2085723).

3897189 is a wasteful number, since it uses less digits than its factorization.

3897189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 374 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 3897189 is about 1974.1299349334. The cubic root of 3897189 is about 157.3682647510.

It can be divided in two parts, 38971 and 89, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 3897189 in words is "three million, eight hundred ninety-seven thousand, one hundred eighty-nine".