13799217 has 4 divisors (see below), whose sum is σ = 18398960. Its totient is φ = 9199476.

The previous prime is 13799209. The next prime is 13799249. The reversal of 13799217 is 71299731.

13799217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71299731 = 3 ⋅23766577.

It is not a de Polignac number, because 13799217 - 2³ = 13799209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13799207) 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, 2299867 + ... + 2299872.

It is an arithmetic number, because the mean of its divisors is an integer number (4599740).

Almost surely, 2^13799217 is an apocalyptic number.

It is an amenable number.

13799217 is a deficient number, since it is larger than the sum of its proper divisors (4599743).

13799217 is an equidigital number, since it uses as much as digits as its factorization.

13799217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4599742.

The product of its digits is 23814, while the sum is 39.

The square root of 13799217 is about 3714.7297344491. The cubic root of 13799217 is about 239.8564940701.

The spelling of 13799217 in words is "thirteen million, seven hundred ninety-nine thousand, two hundred seventeen".