14991371 has 4 divisors (see below), whose sum is σ = 15124152. Its totient is φ = 14858592.

The previous prime is 14991367. The next prime is 14991373. The reversal of 14991371 is 17319941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17319941 = 2003 ⋅8647.

It is a cyclic number.

It is not a de Polignac number, because 14991371 - 2² = 14991367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14991373) 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, 66221 + ... + 66446.

It is an arithmetic number, because the mean of its divisors is an integer number (3781038).

Almost surely, 2^14991371 is an apocalyptic number.

14991371 is a deficient number, since it is larger than the sum of its proper divisors (132781).

14991371 is a wasteful number, since it uses less digits than its factorization.

14991371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132780.

The product of its digits is 6804, while the sum is 35.

The square root of 14991371 is about 3871.8691868399. The cubic root of 14991371 is about 246.5739073752.

The spelling of 14991371 in words is "fourteen million, nine hundred ninety-one thousand, three hundred seventy-one".