22911009 has 8 divisors (see below), whose sum is σ = 33325152. Its totient is φ = 13885440.

The previous prime is 22911001. The next prime is 22911041. The reversal of 22911009 is 90011922.

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

It is not a de Polignac number, because 22911009 - 2³ = 22911001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22911009.

It is not an unprimeable number, because it can be changed into a prime (22911001) 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 7 ways as a sum of consecutive naturals, for example, 347104 + ... + 347169.

It is an arithmetic number, because the mean of its divisors is an integer number (4165644).

Almost surely, 2^22911009 is an apocalyptic number.

It is an amenable number.

22911009 is a deficient number, since it is larger than the sum of its proper divisors (10414143).

22911009 is a wasteful number, since it uses less digits than its factorization.

22911009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694287.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 22911009 is about 4786.5445782945. The cubic root of 22911009 is about 284.0194433888.

The spelling of 22911009 in words is "twenty-two million, nine hundred eleven thousand, nine".