13906217 has 8 divisors (see below), whose sum is σ = 15005760. Its totient is φ = 12810960.

The previous prime is 13906183. The next prime is 13906261. The reversal of 13906217 is 71260931.

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

It is a cyclic number.

It is not a de Polignac number, because 13906217 - 2¹⁰ = 13905193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13906217.

It is not an unprimeable number, because it can be changed into a prime (13903217) 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, 9884 + ... + 11202.

It is an arithmetic number, because the mean of its divisors is an integer number (1875720).

Almost surely, 2^13906217 is an apocalyptic number.

It is an amenable number.

13906217 is a deficient number, since it is larger than the sum of its proper divisors (1099543).

13906217 is a wasteful number, since it uses less digits than its factorization.

13906217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 13906217 is about 3729.1040478914. The cubic root of 13906217 is about 240.4748526833.

The spelling of 13906217 in words is "thirteen million, nine hundred six thousand, two hundred seventeen".