22209399 has 6 divisors (see below), whose sum is σ = 32080256. Its totient is φ = 14806260.

The previous prime is 22209391. The next prime is 22209401. The reversal of 22209399 is 99390222.

It is not a de Polignac number, because 22209399 - 2³ = 22209391 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 (22209391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1233847 + ... + 1233864.

Almost surely, 2^22209399 is an apocalyptic number.

22209399 is a deficient number, since it is larger than the sum of its proper divisors (9870857).

22209399 is a wasteful number, since it uses less digits than its factorization.

22209399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467717 (or 2467714 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 22209399 is about 4712.6849035343. The cubic root of 22209399 is about 281.0901337397.

The spelling of 22209399 in words is "twenty-two million, two hundred nine thousand, three hundred ninety-nine".