2389391 has 2 divisors, whose sum is σ = 2389392. Its totient is φ = 2389390.

The previous prime is 2389379. The next prime is 2389403. The reversal of 2389391 is 1939832.

It is a balanced prime because it is at equal distance from previous prime (2389379) and next prime (2389403).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2389391 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2389351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194695 + 1194696.

It is an arithmetic number, because the mean of its divisors is an integer number (1194696).

2^2389391 is an apocalyptic number.

2389391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389391 is an equidigital number, since it uses as much as digits as its factorization.

2389391 is an evil number, because the sum of its binary digits is even.

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

The square root of 2389391 is about 1545.7655061490. The cubic root of 2389391 is about 133.6890204452.

The spelling of 2389391 in words is "two million, three hundred eighty-nine thousand, three hundred ninety-one".