13939589 has 4 divisors (see below), whose sum is σ = 14236224. Its totient is φ = 13642956.

The previous prime is 13939577. The next prime is 13939603. The reversal of 13939589 is 98593931.

13939589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13939589 - 2⁴ = 13939573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 296587 = 13939589 / (1 + 3 + 9 + 3 + 9 + 5 + 8 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13939529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148247 + ... + 148340.

It is an arithmetic number, because the mean of its divisors is an integer number (3559056).

Almost surely, 2^13939589 is an apocalyptic number.

It is an amenable number.

13939589 is a deficient number, since it is larger than the sum of its proper divisors (296635).

13939589 is an equidigital number, since it uses as much as digits as its factorization.

13939589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296634.

The product of its digits is 262440, while the sum is 47.

The square root of 13939589 is about 3733.5758998579. The cubic root of 13939589 is about 240.6670620572.

The spelling of 13939589 in words is "thirteen million, nine hundred thirty-nine thousand, five hundred eighty-nine".