2890391 has 16 divisors (see below), whose sum is σ = 3545856. Its totient is φ = 2299776.

The previous prime is 2890379. The next prime is 2890397. The reversal of 2890391 is 1930982.

2890391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2890391 - 2¹⁴ = 2874007 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 (2890397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12620 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (221616).

2^2890391 is an apocalyptic number.

2890391 is a deficient number, since it is larger than the sum of its proper divisors (655465).

2890391 is a wasteful number, since it uses less digits than its factorization.

2890391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2890391 is about 1700.1149961106. The cubic root of 2890391 is about 142.4466364259.

The spelling of 2890391 in words is "two million, eight hundred ninety thousand, three hundred ninety-one".