12739589 has 2 divisors, whose sum is σ = 12739590. Its totient is φ = 12739588.

The previous prime is 12739577. The next prime is 12739603. The reversal of 12739589 is 98593721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 2079364 = 3265^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 12739589 - 2¹² = 12735493 is a 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 (12739189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369794 + 6369795.

It is an arithmetic number, because the mean of its divisors is an integer number (6369795).

Almost surely, 2^12739589 is an apocalyptic number.

It is an amenable number.

12739589 is a deficient number, since it is larger than the sum of its proper divisors (1).

12739589 is an equidigital number, since it uses as much as digits as its factorization.

12739589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 12739589 is about 3569.2560849566. The cubic root of 12739589 is about 233.5528326787.

The spelling of 12739589 in words is "twelve million, seven hundred thirty-nine thousand, five hundred eighty-nine".