216849147 has 32 divisors (see below), whose sum is σ = 310590720. Its totient is φ = 134184960.

The previous prime is 216849133. The next prime is 216849151. The reversal of 216849147 is 741948612.

It is not a de Polignac number, because 216849147 - 2¹⁰ = 216848123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216849099 and 216849108.

It is not an unprimeable number, because it can be changed into a prime (216849107) 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 31 ways as a sum of consecutive naturals, for example, 843643 + ... + 843899.

It is an arithmetic number, because the mean of its divisors is an integer number (9705960).

Almost surely, 2^216849147 is an apocalyptic number.

216849147 is a deficient number, since it is larger than the sum of its proper divisors (93741573).

216849147 is a wasteful number, since it uses less digits than its factorization.

216849147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its digits is 96768, while the sum is 42.

The square root of 216849147 is about 14725.7986880169. The cubic root of 216849147 is about 600.7852191587.

It can be divided in two parts, 2168 and 49147, that added together give a palindrome (51315).

The spelling of 216849147 in words is "two hundred sixteen million, eight hundred forty-nine thousand, one hundred forty-seven".