212990089 has 8 divisors (see below), whose sum is σ = 229703040. Its totient is φ = 196324176.

The previous prime is 212990047. The next prime is 212990111. The reversal of 212990089 is 980099212.

212990089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212990089 - 2⁷ = 212989961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212993089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047 + ... + 20740.

It is an arithmetic number, because the mean of its divisors is an integer number (28712880).

Almost surely, 2^212990089 is an apocalyptic number.

It is an amenable number.

212990089 is a deficient number, since it is larger than the sum of its proper divisors (16712951).

212990089 is a wasteful number, since it uses less digits than its factorization.

212990089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23519.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 212990089 is about 14594.1799701114. The cubic root of 212990089 is about 597.1999990205.

The spelling of 212990089 in words is "two hundred twelve million, nine hundred ninety thousand, eighty-nine".