216396383 has 8 divisors (see below), whose sum is σ = 261857952. Its totient is φ = 174571776.

The previous prime is 216396379. The next prime is 216396391. The reversal of 216396383 is 383693612.

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

It is not a de Polignac number, because 216396383 - 2² = 216396379 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 216396383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216396343) 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, 909110 + ... + 909347.

It is an arithmetic number, because the mean of its divisors is an integer number (32732244).

Almost surely, 2^216396383 is an apocalyptic number.

216396383 is a deficient number, since it is larger than the sum of its proper divisors (45461569).

216396383 is a wasteful number, since it uses less digits than its factorization.

216396383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818481.

The product of its digits is 139968, while the sum is 41.

The square root of 216396383 is about 14710.4174991738. The cubic root of 216396383 is about 600.3667970172.

The spelling of 216396383 in words is "two hundred sixteen million, three hundred ninety-six thousand, three hundred eighty-three".