216913199 has 8 divisors (see below), whose sum is σ = 222554112. Its totient is φ = 211299480.

The previous prime is 216913187. The next prime is 216913201. The reversal of 216913199 is 991319612.

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 216913199 - 2²⁴ = 200135983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216913399) 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 + ... + 23054.

It is an arithmetic number, because the mean of its divisors is an integer number (27819264).

Almost surely, 2^216913199 is an apocalyptic number.

216913199 is a deficient number, since it is larger than the sum of its proper divisors (5640913).

216913199 is a wasteful number, since it uses less digits than its factorization.

216913199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13597.

The product of its digits is 26244, while the sum is 41.

The square root of 216913199 is about 14727.9733500574. The cubic root of 216913199 is about 600.8443658162.

The spelling of 216913199 in words is "two hundred sixteen million, nine hundred thirteen thousand, one hundred ninety-nine".