4223989 has 12 divisors (see below), whose sum is σ = 5307232. Its totient is φ = 3290760.

The previous prime is 4223983. The next prime is 4223993. The reversal of 4223989 is 9893224.

It is not a de Polignac number, because 4223989 - 2³ = 4223981 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 4² + 2¹³ + 2¹⁹ + 3¹³ + 9 + 8⁷ + 9 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1647 + ... + 3340.

Almost surely, 2^4223989 is an apocalyptic number.

It is an amenable number.

4223989 is a deficient number, since it is larger than the sum of its proper divisors (1083243).

4223989 is a wasteful number, since it uses less digits than its factorization.

4223989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016 (or 5005 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 4223989 is about 2055.2345364946. The cubic root of 4223989 is about 161.6494605039.

The spelling of 4223989 in words is "four million, two hundred twenty-three thousand, nine hundred eighty-nine".