22321389 has 8 divisors (see below), whose sum is σ = 29783680. Its totient is φ = 14870016.

The previous prime is 22321379. The next prime is 22321399. The reversal of 22321389 is 98312322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22321379) and next prime (22321399).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22321389 - 2⁸ = 22321133 is a prime.

It is a super-3 number, since 3×22321389³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321319) 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 7 ways as a sum of consecutive naturals, for example, 6684 + ... + 9450.

It is an arithmetic number, because the mean of its divisors is an integer number (3722960).

Almost surely, 2^22321389 is an apocalyptic number.

It is an amenable number.

22321389 is a deficient number, since it is larger than the sum of its proper divisors (7462291).

22321389 is a wasteful number, since it uses less digits than its factorization.

22321389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459.

The product of its digits is 5184, while the sum is 30.

The square root of 22321389 is about 4724.5517247671. The cubic root of 22321389 is about 281.5618037264.

It can be divided in two parts, 223 and 21389, that added together give a palindrome (21612).

The spelling of 22321389 in words is "twenty-two million, three hundred twenty-one thousand, three hundred eighty-nine".