214830921 has 8 divisors (see below), whose sum is σ = 303290784. Its totient is φ = 134795840.

The previous prime is 214830901. The next prime is 214830923. The reversal of 214830921 is 129038412.

214830921 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 214830921 - 2¹⁵ = 214798153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214830923) 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, 2106135 + ... + 2106236.

It is an arithmetic number, because the mean of its divisors is an integer number (37911348).

Almost surely, 2^214830921 is an apocalyptic number.

It is an amenable number.

214830921 is a deficient number, since it is larger than the sum of its proper divisors (88459863).

214830921 is a wasteful number, since it uses less digits than its factorization.

214830921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212391.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 214830921 is about 14657.1116185966. Note that the first 3 decimals coincide. The cubic root of 214830921 is about 598.9155606106.

The spelling of 214830921 in words is "two hundred fourteen million, eight hundred thirty thousand, nine hundred twenty-one".