216883983 has 8 divisors (see below), whose sum is σ = 289265200. Its totient is φ = 144546048.

The previous prime is 216883939. The next prime is 216884009. The reversal of 216883983 is 389388612.

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

It is not a de Polignac number, because 216883983 - 2¹⁰ = 216882959 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 (216883903) 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, 3633 + ... + 21141.

It is an arithmetic number, because the mean of its divisors is an integer number (36158150).

Almost surely, 2^216883983 is an apocalyptic number.

216883983 is a deficient number, since it is larger than the sum of its proper divisors (72381217).

216883983 is a wasteful number, since it uses less digits than its factorization.

216883983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21641.

The product of its digits is 497664, while the sum is 48.

The square root of 216883983 is about 14726.9814626080. The cubic root of 216883983 is about 600.8173887315.

The spelling of 216883983 in words is "two hundred sixteen million, eight hundred eighty-three thousand, nine hundred eighty-three".