14291991 has 16 divisors (see below), whose sum is σ = 24198400. Its totient is φ = 8166744.

The previous prime is 14291939. The next prime is 14292001. The reversal of 14291991 is 19919241.

It is not a de Polignac number, because 14291991 - 2⁷ = 14291863 is a prime.

It is a super-2 number, since 2×14291991² = 408522013488162, 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 (14291491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37621 + ... + 37998.

It is an arithmetic number, because the mean of its divisors is an integer number (1512400).

Almost surely, 2^14291991 is an apocalyptic number.

14291991 is a deficient number, since it is larger than the sum of its proper divisors (9906409).

14291991 is an equidigital number, since it uses as much as digits as its factorization.

14291991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75635 (or 75629 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 14291991 is about 3780.4749701592. The cubic root of 14291991 is about 242.6782817654.

The spelling of 14291991 in words is "fourteen million, two hundred ninety-one thousand, nine hundred ninety-one".