212408089 has 8 divisors (see below), whose sum is σ = 217640192. Its totient is φ = 207189360.

The previous prime is 212408017. The next prime is 212408099. The reversal of 212408089 is 980804212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212408089 - 2⁹ = 212407577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212408099) 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 7 ways as a sum of consecutive naturals, for example, 33784 + ... + 39574.

It is an arithmetic number, because the mean of its divisors is an integer number (27205024).

Almost surely, 2^212408089 is an apocalyptic number.

It is an amenable number.

212408089 is a deficient number, since it is larger than the sum of its proper divisors (5232103).

212408089 is an equidigital number, since it uses as much as digits as its factorization.

212408089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 212408089 is about 14574.2268748637. The cubic root of 212408089 is about 596.6555488636.

The spelling of 212408089 in words is "two hundred twelve million, four hundred eight thousand, eighty-nine".