14198991 has 8 divisors (see below), whose sum is σ = 18984240. Its totient is φ = 9439872.

The previous prime is 14198969. The next prime is 14199001. The reversal of 14198991 is 19989141.

It is a happy number.

14198991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14198991 - 2¹¹ = 14196943 is a prime.

It is a super-2 number, since 2×14198991² = 403222690836162, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14198911) 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 7 ways as a sum of consecutive naturals, for example, 5226 + ... + 7463.

It is an arithmetic number, because the mean of its divisors is an integer number (2373030).

Almost surely, 2^14198991 is an apocalyptic number.

14198991 is a deficient number, since it is larger than the sum of its proper divisors (4785249).

14198991 is a wasteful number, since it uses less digits than its factorization.

14198991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13065.

The product of its digits is 23328, while the sum is 42.

The square root of 14198991 is about 3768.1548535059. The cubic root of 14198991 is about 242.1507552800.

The spelling of 14198991 in words is "fourteen million, one hundred ninety-eight thousand, nine hundred ninety-one".