22059989 has 16 divisors (see below), whose sum is σ = 26138112.
Its totient is φ = 18225648.
The previous prime is 22059977. The next prime is 22059997. The reversal of 22059989 is 98995022.
It is not a de Polignac number, because 22059989 - 212 = 22055893 is a prime.
It is a super-3 number, since 3×220599893 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22059949) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24542 + ... + 25424.
It is an arithmetic number, because the mean of its divisors is an integer number (1633632).
Almost surely, 222059989 is an apocalyptic number.
It is an amenable number.
22059989 is a deficient number, since it is larger than the sum of its proper divisors (4078123).
22059989 is an equidigital number, since it uses as much as digits as its factorization.
22059989 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1016.
The product of its (nonzero) digits is 116640, while the sum is 44.
The square root of 22059989 is about 4696.8062553186.
The cubic root of 22059989 is about 280.4583860746.
The spelling of 22059989 in words is "twenty-two million, fifty-nine thousand, nine hundred eighty-nine".