4222989 has 16 divisors (see below), whose sum is σ = 6292800. Its totient is φ = 2798928.

The previous prime is 4222973. The next prime is 4223003. The reversal of 4222989 is 9892224.

It is not a de Polignac number, because 4222989 - 2⁴ = 4222973 is a prime.

It is a Curzon number.

4222989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5842 + ... + 6524.

It is an arithmetic number, because the mean of its divisors is an integer number (393300).

Almost surely, 2^4222989 is an apocalyptic number.

It is an amenable number.

4222989 is a deficient number, since it is larger than the sum of its proper divisors (2069811).

4222989 is a wasteful number, since it uses less digits than its factorization.

4222989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 915 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 4222989 is about 2054.9912408572. The cubic root of 4222989 is about 161.6367030355.

Adding to 4222989 its sum of digits (36), we get a square (4223025 = 2055²).

The spelling of 4222989 in words is "four million, two hundred twenty-two thousand, nine hundred eighty-nine".