13908217 has 4 divisors (see below), whose sum is σ = 13927680. Its totient is φ = 13888756.

The previous prime is 13908211. The next prime is 13908241. The reversal of 13908217 is 71280931.

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.

It is a cyclic number.

It is not a de Polignac number, because 13908217 - 2¹¹ = 13906169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13908211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8617 + ... + 10102.

It is an arithmetic number, because the mean of its divisors is an integer number (3481920).

Almost surely, 2^13908217 is an apocalyptic number.

It is an amenable number.

13908217 is a deficient number, since it is larger than the sum of its proper divisors (19463).

13908217 is an equidigital number, since it uses as much as digits as its factorization.

13908217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19462.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 13908217 is about 3729.3721991778. The cubic root of 13908217 is about 240.4863805405.

The spelling of 13908217 in words is "thirteen million, nine hundred eight thousand, two hundred seventeen".