214891089 has 16 divisors (see below), whose sum is σ = 328509312. Its totient is φ = 122398848.

The previous prime is 214891087. The next prime is 214891133. The reversal of 214891089 is 980198412.

It is not a de Polignac number, because 214891089 - 2¹ = 214891087 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 214891089.

It is not an unprimeable number, because it can be changed into a prime (214891087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9774 + ... + 22919.

It is an arithmetic number, because the mean of its divisors is an integer number (20531832).

Almost surely, 2^214891089 is an apocalyptic number.

It is an amenable number.

214891089 is a deficient number, since it is larger than the sum of its proper divisors (113618223).

214891089 is a wasteful number, since it uses less digits than its factorization.

214891089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33016.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 214891089 is about 14659.1639938982. The cubic root of 214891089 is about 598.9714684344.

It can be divided in two parts, 21489 and 1089, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 214891089 in words is "two hundred fourteen million, eight hundred ninety-one thousand, eighty-nine".