216059489 has 4 divisors (see below), whose sum is σ = 216124080. Its totient is φ = 215994900.

The previous prime is 216059369. The next prime is 216059513. The reversal of 216059489 is 984950612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216059489 - 2²⁴ = 199282273 is a prime.

It is a super-2 number, since 2×216059489² = 93363405573882242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216059189) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26987 + ... + 34064.

It is an arithmetic number, because the mean of its divisors is an integer number (54031020).

Almost surely, 2^216059489 is an apocalyptic number.

It is an amenable number.

216059489 is a deficient number, since it is larger than the sum of its proper divisors (64591).

216059489 is an equidigital number, since it uses as much as digits as its factorization.

216059489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64590.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 216059489 is about 14698.9621742489. The cubic root of 216059489 is about 600.0550773514.

The spelling of 216059489 in words is "two hundred sixteen million, fifty-nine thousand, four hundred eighty-nine".