22209697 has 4 divisors (see below), whose sum is σ = 23175360. Its totient is φ = 21244036.

The previous prime is 22209653. The next prime is 22209713. The reversal of 22209697 is 79690222.

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.

It is a cyclic number.

It is not a de Polignac number, because 22209697 - 2¹⁹ = 21685409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22209617) 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, 482797 + ... + 482842.

It is an arithmetic number, because the mean of its divisors is an integer number (5793840).

Almost surely, 2^22209697 is an apocalyptic number.

It is an amenable number.

22209697 is a deficient number, since it is larger than the sum of its proper divisors (965663).

22209697 is an equidigital number, since it uses as much as digits as its factorization.

22209697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965662.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 22209697 is about 4712.7165202248. The cubic root of 22209697 is about 281.0913909324.

The spelling of 22209697 in words is "twenty-two million, two hundred nine thousand, six hundred ninety-seven".