216089995 has 16 divisors (see below), whose sum is σ = 292008960. Its totient is φ = 152085600.

The previous prime is 216089989. The next prime is 216090011. The reversal of 216089995 is 599980612.

It is not a de Polignac number, because 216089995 - 2¹⁷ = 215958923 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61665 + ... + 65074.

It is an arithmetic number, because the mean of its divisors is an integer number (18250560).

Almost surely, 2^216089995 is an apocalyptic number.

216089995 is a deficient number, since it is larger than the sum of its proper divisors (75918965).

216089995 is a wasteful number, since it uses less digits than its factorization.

216089995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126786.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 216089995 is about 14699.9998299320. Note that the first 3 decimals coincide. The cubic root of 216089995 is about 600.0833171336.

The spelling of 216089995 in words is "two hundred sixteen million, eighty-nine thousand, nine hundred ninety-five".