22208399 has 8 divisors (see below), whose sum is σ = 22882080. Its totient is φ = 21538656.

The previous prime is 22208357. The next prime is 22208411. The reversal of 22208399 is 99380222.

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

It is a cyclic number.

It is not a de Polignac number, because 22208399 - 2²⁴ = 5431183 is a prime.

It is a super-2 number, since 2×22208399² = 986425972286402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22207399) 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, 13622 + ... + 15164.

It is an arithmetic number, because the mean of its divisors is an integer number (2860260).

Almost surely, 2^22208399 is an apocalyptic number.

22208399 is a deficient number, since it is larger than the sum of its proper divisors (673681).

22208399 is a wasteful number, since it uses less digits than its factorization.

22208399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 22208399 is about 4712.5788057071. The cubic root of 22208399 is about 281.0859148899.

The spelling of 22208399 in words is "twenty-two million, two hundred eight thousand, three hundred ninety-nine".