22246399 has 4 divisors (see below), whose sum is σ = 25424464. Its totient is φ = 19068336.

The previous prime is 22246391. The next prime is 22246417. The reversal of 22246399 is 99364222.

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

It is not a de Polignac number, because 22246399 - 2³ = 22246391 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 (22246391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589022 + ... + 1589035.

It is an arithmetic number, because the mean of its divisors is an integer number (6356116).

Almost surely, 2^22246399 is an apocalyptic number.

22246399 is a deficient number, since it is larger than the sum of its proper divisors (3178065).

22246399 is an equidigital number, since it uses as much as digits as its factorization.

22246399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178064.

The product of its digits is 46656, while the sum is 37.

The square root of 22246399 is about 4716.6088453464. The cubic root of 22246399 is about 281.2461422352.

The spelling of 22246399 in words is "twenty-two million, two hundred forty-six thousand, three hundred ninety-nine".