14640091 has 4 divisors (see below), whose sum is σ = 15112384. Its totient is φ = 14167800.

The previous prime is 14640071. The next prime is 14640097. The reversal of 14640091 is 19004641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19004641 = 71 ⋅267671.

It is a cyclic number.

It is not a de Polignac number, because 14640091 - 2²¹ = 12542939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14640097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236100 + ... + 236161.

It is an arithmetic number, because the mean of its divisors is an integer number (3778096).

Almost surely, 2^14640091 is an apocalyptic number.

14640091 is a deficient number, since it is larger than the sum of its proper divisors (472293).

14640091 is an equidigital number, since it uses as much as digits as its factorization.

14640091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472292.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 14640091 is about 3826.2371855388. The cubic root of 14640091 is about 244.6327470031.

The spelling of 14640091 in words is "fourteen million, six hundred forty thousand, ninety-one".