2922391 has 2 divisors, whose sum is σ = 2922392. Its totient is φ = 2922390.

The previous prime is 2922383. The next prime is 2922407. The reversal of 2922391 is 1932292.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2922391 - 2³ = 2922383 is a prime.

It is the 1710-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2922331) by changing a digit.

It is a nontrivial repunit in base 1709.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1461195 + 1461196.

It is an arithmetic number, because the mean of its divisors is an integer number (1461196).

2^2922391 is an apocalyptic number.

2922391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2922391 is an equidigital number, since it uses as much as digits as its factorization.

2922391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 2922391 is about 1709.5002193624. The cubic root of 2922391 is about 142.9703917705.

Subtracting from 2922391 its reverse (1932292), we obtain a palindrome (990099).

The spelling of 2922391 in words is "two million, nine hundred twenty-two thousand, three hundred ninety-one".