22147393 has 4 divisors (see below), whose sum is σ = 22156848. Its totient is φ = 22137940.

The previous prime is 22147351. The next prime is 22147409. The reversal of 22147393 is 39374122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22147393 - 2¹⁷ = 22016321 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22147313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698 + ... + 6868.

It is an arithmetic number, because the mean of its divisors is an integer number (5539212).

Almost surely, 2^22147393 is an apocalyptic number.

It is an amenable number.

22147393 is a deficient number, since it is larger than the sum of its proper divisors (9455).

22147393 is an equidigital number, since it uses as much as digits as its factorization.

22147393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454.

The product of its digits is 9072, while the sum is 31.

The square root of 22147393 is about 4706.1016776096. The cubic root of 22147393 is about 280.8282998469.

The spelling of 22147393 in words is "twenty-two million, one hundred forty-seven thousand, three hundred ninety-three".