2897189 has 4 divisors (see below), whose sum is σ = 2906124. Its totient is φ = 2888256.

The previous prime is 2897179. The next prime is 2897197. The reversal of 2897189 is 9817982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9817982 = 2 ⋅4908991.

It can be written as a sum of positive squares in 2 ways, for example, as 1416100 + 1481089 = 1190^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 2897189 - 2⁴ = 2897173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3962 + ... + 4635.

It is an arithmetic number, because the mean of its divisors is an integer number (726531).

2^2897189 is an apocalyptic number.

It is an amenable number.

2897189 is a deficient number, since it is larger than the sum of its proper divisors (8935).

2897189 is an equidigital number, since it uses as much as digits as its factorization.

2897189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8934.

The product of its digits is 72576, while the sum is 44.

The square root of 2897189 is about 1702.1130984750. The cubic root of 2897189 is about 142.5582238731.

The spelling of 2897189 in words is "two million, eight hundred ninety-seven thousand, one hundred eighty-nine".