13122589 has 4 divisors (see below), whose sum is σ = 13894524. Its totient is φ = 12350656.

The previous prime is 13122547. The next prime is 13122601. The reversal of 13122589 is 98522131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6579225 + 6543364 = 2565^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 13122589 - 2¹³ = 13114397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13122589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122539) 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 in 3 ways as a sum of consecutive naturals, for example, 385942 + ... + 385975.

It is an arithmetic number, because the mean of its divisors is an integer number (3473631).

Almost surely, 2^13122589 is an apocalyptic number.

It is an amenable number.

13122589 is a deficient number, since it is larger than the sum of its proper divisors (771935).

13122589 is an equidigital number, since it uses as much as digits as its factorization.

13122589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771934.

The product of its digits is 4320, while the sum is 31.

The square root of 13122589 is about 3622.5114216521. The cubic root of 13122589 is about 235.8702544993.

The spelling of 13122589 in words is "thirteen million, one hundred twenty-two thousand, five hundred eighty-nine".