14891217 has 8 divisors (see below), whose sum is σ = 21660000. Its totient is φ = 9024960.

The previous prime is 14891203. The next prime is 14891221. The reversal of 14891217 is 71219841.

14891217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14891217 - 2⁶ = 14891153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 451249 = 14891217 / (1 + 4 + 8 + 9 + 1 + 2 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (14891257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225592 + ... + 225657.

It is an arithmetic number, because the mean of its divisors is an integer number (2707500).

Almost surely, 2^14891217 is an apocalyptic number.

It is an amenable number.

14891217 is a deficient number, since it is larger than the sum of its proper divisors (6768783).

14891217 is a wasteful number, since it uses less digits than its factorization.

14891217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451263.

The product of its digits is 4032, while the sum is 33.

The square root of 14891217 is about 3858.9139663900. The cubic root of 14891217 is about 246.0235782807.

The spelling of 14891217 in words is "fourteen million, eight hundred ninety-one thousand, two hundred seventeen".