4230189921 has 8 divisors (see below), whose sum is σ = 5724436384. Its totient is φ = 2778035040.

The previous prime is 4230189913. The next prime is 4230189959. The reversal of 4230189921 is 1299810324.

4230189921 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 not a de Polignac number, because 4230189921 - 2³ = 4230189913 is a prime.

It is a Duffinian number.

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 4230189921.

It is not an unprimeable number, because it can be changed into a prime (4230189991) 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, 10522660 + ... + 10523061.

It is an arithmetic number, because the mean of its divisors is an integer number (715554548).

Almost surely, 2^4230189921 is an apocalyptic number.

It is an amenable number.

4230189921 is a deficient number, since it is larger than the sum of its proper divisors (1494246463).

4230189921 is a wasteful number, since it uses less digits than its factorization.

4230189921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045791.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 4230189921 is about 65039.9102167277. The cubic root of 4230189921 is about 1617.2852363832.

The spelling of 4230189921 in words is "four billion, two hundred thirty million, one hundred eighty-nine thousand, nine hundred twenty-one".