14018991 has 16 divisors (see below), whose sum is σ = 21508608. Its totient is φ = 7956000.

The previous prime is 14018929. The next prime is 14019011. The reversal of 14018991 is 19981041.

It is not a de Polignac number, because 14018991 - 2¹⁰ = 14017967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14018491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (1344288).

Almost surely, 2^14018991 is an apocalyptic number.

14018991 is a deficient number, since it is larger than the sum of its proper divisors (7489617).

14018991 is a wasteful number, since it uses less digits than its factorization.

14018991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4582.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 14018991 is about 3744.1943058554. The cubic root of 14018991 is about 241.1231557775.

The spelling of 14018991 in words is "fourteen million, eighteen thousand, nine hundred ninety-one".