2391589 has 2 divisors, whose sum is σ = 2391590. Its totient is φ = 2391588.

The previous prime is 2391583. The next prime is 2391629. The reversal of 2391589 is 9851932.

2391589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340964 + 1050625 = 1158^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2391589 - 2⁷ = 2391461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2391583) 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 as a sum of consecutive naturals, namely, 1195794 + 1195795.

It is an arithmetic number, because the mean of its divisors is an integer number (1195795).

2^2391589 is an apocalyptic number.

It is an amenable number.

2391589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391589 is an equidigital number, since it uses as much as digits as its factorization.

2391589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 2391589 is about 1546.4763173098. The cubic root of 2391589 is about 133.7300013771.

The spelling of 2391589 in words is "two million, three hundred ninety-one thousand, five hundred eighty-nine".