216097489 has 16 divisors (see below), whose sum is σ = 244328832. Its totient is φ = 190003968.

The previous prime is 216097487. The next prime is 216097547. The reversal of 216097489 is 984790612.

It is not a de Polignac number, because 216097489 - 2¹ = 216097487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216097487) 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 15 ways as a sum of consecutive naturals, for example, 10387 + ... + 23239.

It is an arithmetic number, because the mean of its divisors is an integer number (15270552).

Almost surely, 2^216097489 is an apocalyptic number.

It is an amenable number.

216097489 is a deficient number, since it is larger than the sum of its proper divisors (28231343).

216097489 is a wasteful number, since it uses less digits than its factorization.

216097489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12936.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 216097489 is about 14700.2547256842. The cubic root of 216097489 is about 600.0902540156.

The spelling of 216097489 in words is "two hundred sixteen million, ninety-seven thousand, four hundred eighty-nine".