2897239 has 4 divisors (see below), whose sum is σ = 2924424. Its totient is φ = 2870056.

The previous prime is 2897227. The next prime is 2897249. The reversal of 2897239 is 9327982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9327982 = 2 ⋅4663991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2897239 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 (2897249) 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, 13432 + ... + 13645.

It is an arithmetic number, because the mean of its divisors is an integer number (731106).

2^2897239 is an apocalyptic number.

2897239 is a deficient number, since it is larger than the sum of its proper divisors (27185).

2897239 is a wasteful number, since it uses less digits than its factorization.

2897239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27184.

The product of its digits is 54432, while the sum is 40.

The square root of 2897239 is about 1702.1277860372. The cubic root of 2897239 is about 142.5590439634.

It can be divided in two parts, 2897 and 239, that added together give a square (3136 = 56²).

The spelling of 2897239 in words is "two million, eight hundred ninety-seven thousand, two hundred thirty-nine".