14991589 has 4 divisors (see below), whose sum is σ = 15780640. Its totient is φ = 14202540.

The previous prime is 14991553. The next prime is 14991601. The reversal of 14991589 is 98519941.

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 a de Polignac number, because none of the positive numbers 2^k-14991589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14991539) 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, 394497 + ... + 394534.

It is an arithmetic number, because the mean of its divisors is an integer number (3945160).

Almost surely, 2^14991589 is an apocalyptic number.

14991589 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

14991589 is a deficient number, since it is larger than the sum of its proper divisors (789051).

14991589 is an equidigital number, since it uses as much as digits as its factorization.

14991589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789050.

The product of its digits is 116640, while the sum is 46.

The square root of 14991589 is about 3871.8973385151. The cubic root of 14991589 is about 246.5751025706.

The spelling of 14991589 in words is "fourteen million, nine hundred ninety-one thousand, five hundred eighty-nine".