14345991 has 28 divisors (see below), whose sum is σ = 23477640. Its totient is φ = 8689680.

The previous prime is 14345983. The next prime is 14345993. The reversal of 14345991 is 19954341.

It is a happy number.

It is not a de Polignac number, because 14345991 - 2³ = 14345983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14345993) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7125 + ... + 8913.

Almost surely, 2^14345991 is an apocalyptic number.

14345991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14345991 is a deficient number, since it is larger than the sum of its proper divisors (9131649).

14345991 is an equidigital number, since it uses as much as digits as its factorization.

14345991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818 (or 1803 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 14345991 is about 3787.6101964167. The cubic root of 14345991 is about 242.9835379795.

The spelling of 14345991 in words is "fourteen million, three hundred forty-five thousand, nine hundred ninety-one".