22409423 has 8 divisors (see below), whose sum is σ = 22874928. Its totient is φ = 21947904.

The previous prime is 22409393. The next prime is 22409437. The reversal of 22409423 is 32490422.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22409423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22409392 and 22409401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22409473) 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, 12065 + ... + 13797.

It is an arithmetic number, because the mean of its divisors is an integer number (2859366).

Almost surely, 2^22409423 is an apocalyptic number.

22409423 is a deficient number, since it is larger than the sum of its proper divisors (465505).

22409423 is a wasteful number, since it uses less digits than its factorization.

22409423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22409423 is about 4733.8592078768. The cubic root of 22409423 is about 281.9314715364.

Adding to 22409423 its reverse (32490422), we get a palindrome (54899845).

The spelling of 22409423 in words is "twenty-two million, four hundred nine thousand, four hundred twenty-three".