14091989 has 4 divisors (see below), whose sum is σ = 14261856. Its totient is φ = 13922124.

The previous prime is 14091983. The next prime is 14092019. The reversal of 14091989 is 98919041.

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 14091989 - 2⁸ = 14091733 is a prime.

It is a super-2 number, since 2×14091989² = 397168307952242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14091983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84809 + ... + 84974.

It is an arithmetic number, because the mean of its divisors is an integer number (3565464).

Almost surely, 2^14091989 is an apocalyptic number.

It is an amenable number.

14091989 is a deficient number, since it is larger than the sum of its proper divisors (169867).

14091989 is an equidigital number, since it uses as much as digits as its factorization.

14091989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169866.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 14091989 is about 3753.9298075484. The cubic root of 14091989 is about 241.5409472667.

It can be divided in two parts, 140 and 91989, that added together give a palindrome (92129).

The spelling of 14091989 in words is "fourteen million, ninety-one thousand, nine hundred eighty-nine".