211089 has 8 divisors (see below), whose sum is σ = 298080. Its totient is φ = 132416.

The previous prime is 211073. The next prime is 211093. The reversal of 211089 is 980112.

211089 = T₉₄ + T₉₅ + ... + T₁₂₇.

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 211089 - 2⁴ = 211073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211039) 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, 2019 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (37260).

2²¹¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

211089 is a deficient number, since it is larger than the sum of its proper divisors (86991).

211089 is a wasteful number, since it uses less digits than its factorization.

211089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 211089 is about 459.4442294773. Note that the first 3 decimals coincide. The cubic root of 211089 is about 59.5417873722.

The spelling of 211089 in words is "two hundred eleven thousand, eighty-nine".