22266399 has 8 divisors (see below), whose sum is σ = 29731072. Its totient is φ = 14823000.

The previous prime is 22266383. The next prime is 22266407. The reversal of 22266399 is 99366222.

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

It is not a de Polignac number, because 22266399 - 2⁴ = 22266383 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 (22266799) 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, 2689 + ... + 7194.

It is an arithmetic number, because the mean of its divisors is an integer number (3716384).

Almost surely, 2^22266399 is an apocalyptic number.

22266399 is a deficient number, since it is larger than the sum of its proper divisors (7464673).

22266399 is an equidigital number, since it uses as much as digits as its factorization.

22266399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10637.

The product of its digits is 69984, while the sum is 39.

The square root of 22266399 is about 4718.7285363750. The cubic root of 22266399 is about 281.3303991381.

The spelling of 22266399 in words is "twenty-two million, two hundred sixty-six thousand, three hundred ninety-nine".