216899383 has 8 divisors (see below), whose sum is σ = 229502000. Its totient is φ = 204415488.

The previous prime is 216899377. The next prime is 216899393. The reversal of 216899383 is 383998612.

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 216899383 - 2²⁵ = 183344951 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 (216899303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25908 + ... + 33241.

It is an arithmetic number, because the mean of its divisors is an integer number (28687750).

Almost surely, 2^216899383 is an apocalyptic number.

216899383 is a deficient number, since it is larger than the sum of its proper divisors (12602617).

216899383 is a wasteful number, since it uses less digits than its factorization.

216899383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59361.

The product of its digits is 559872, while the sum is 49.

The square root of 216899383 is about 14727.5043031737. The cubic root of 216899383 is about 600.8316088823.

The spelling of 216899383 in words is "two hundred sixteen million, eight hundred ninety-nine thousand, three hundred eighty-three".