2839391 has 4 divisors (see below), whose sum is σ = 3006432. Its totient is φ = 2672352.

The previous prime is 2839381. The next prime is 2839399. The reversal of 2839391 is 1939382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2839391 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 (2839399) 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, 83495 + ... + 83528.

It is an arithmetic number, because the mean of its divisors is an integer number (751608).

2^2839391 is an apocalyptic number.

2839391 is a deficient number, since it is larger than the sum of its proper divisors (167041).

2839391 is a wasteful number, since it uses less digits than its factorization.

2839391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167040.

The product of its digits is 11664, while the sum is 35.

The square root of 2839391 is about 1685.0492574403. The cubic root of 2839391 is about 141.6038518907.

Subtracting from 2839391 its reverse (1939382), we obtain a palindrome (900009).

The spelling of 2839391 in words is "two million, eight hundred thirty-nine thousand, three hundred ninety-one".