216239 has 6 divisors (see below), whose sum is σ = 228600. Its totient is φ = 204516.

The previous prime is 216233. The next prime is 216259. The reversal of 216239 is 932612.

It is not a de Polignac number, because 216239 - 2⁸ = 215983 is a prime.

It is a super-3 number, since 3×216239³ = 30333556140179757, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (38100).

2²¹⁶²³⁹ is an apocalyptic number.

216239 is a deficient number, since it is larger than the sum of its proper divisors (12361).

216239 is an equidigital number, since it uses as much as digits as its factorization.

216239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 618 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 216239 is about 465.0150535198. The cubic root of 216239 is about 60.0221214726.

The spelling of 216239 in words is "two hundred sixteen thousand, two hundred thirty-nine".