14991719 has 4 divisors (see below), whose sum is σ = 15215544. Its totient is φ = 14767896.

The previous prime is 14991707. The next prime is 14991737. The reversal of 14991719 is 91719941.

14991719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14991719 - 2²⁰ = 13943143 is a prime.

It is a super-2 number, since 2×14991719² = 449503277149922, 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 (14991749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111812 + ... + 111945.

It is an arithmetic number, because the mean of its divisors is an integer number (3803886).

Almost surely, 2^14991719 is an apocalyptic number.

14991719 is a deficient number, since it is larger than the sum of its proper divisors (223825).

14991719 is an equidigital number, since it uses as much as digits as its factorization.

14991719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223824.

The product of its digits is 20412, while the sum is 41.

The square root of 14991719 is about 3871.9141261139. The cubic root of 14991719 is about 246.5758152962.

The spelling of 14991719 in words is "fourteen million, nine hundred ninety-one thousand, seven hundred nineteen".