22443397 has 4 divisors (see below), whose sum is σ = 22695660. Its totient is φ = 22191136.

The previous prime is 22443373. The next prime is 22443401. The reversal of 22443397 is 79334422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 6832996 = 3951^2 + 2614^2 .

It is a cyclic number.

It is not a de Polignac number, because 22443397 - 2¹⁹ = 21919109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22443367) 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 3 ways as a sum of consecutive naturals, for example, 125998 + ... + 126175.

It is an arithmetic number, because the mean of its divisors is an integer number (5673915).

Almost surely, 2^22443397 is an apocalyptic number.

It is an amenable number.

22443397 is a deficient number, since it is larger than the sum of its proper divisors (252263).

22443397 is an equidigital number, since it uses as much as digits as its factorization.

22443397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252262.

The product of its digits is 36288, while the sum is 34.

The square root of 22443397 is about 4737.4462529933. The cubic root of 22443397 is about 282.0738744807.

The spelling of 22443397 in words is "twenty-two million, four hundred forty-three thousand, three hundred ninety-seven".