14891969 has 4 divisors (see below), whose sum is σ = 14914644. Its totient is φ = 14869296.

The previous prime is 14891959. The next prime is 14891977. The reversal of 14891969 is 96919841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96919841 = 641 ⋅151201.

It can be written as a sum of positive squares in 2 ways, for example, as 13104400 + 1787569 = 3620^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 14891969 - 2⁸ = 14891713 is a prime.

It is a super-2 number, since 2×14891969² = 443541481393922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14891909) 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, 10322 + ... + 11675.

It is an arithmetic number, because the mean of its divisors is an integer number (3728661).

Almost surely, 2^14891969 is an apocalyptic number.

It is an amenable number.

14891969 is a deficient number, since it is larger than the sum of its proper divisors (22675).

14891969 is an equidigital number, since it uses as much as digits as its factorization.

14891969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22674.

The product of its digits is 139968, while the sum is 47.

The square root of 14891969 is about 3859.0114019008. The cubic root of 14891969 is about 246.0277195723.

The spelling of 14891969 in words is "fourteen million, eight hundred ninety-one thousand, nine hundred sixty-nine".