22459209 has 8 divisors (see below), whose sum is σ = 29972352. Its totient is φ = 14959440.

The previous prime is 22459187. The next prime is 22459231. The reversal of 22459209 is 90295422.

It is an interprime number because it is at equal distance from previous prime (22459187) and next prime (22459231).

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

It is not a de Polignac number, because 22459209 - 2¹⁶ = 22393673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22459209.

It is not an unprimeable number, because it can be changed into a prime (22459249) 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, 1639 + ... + 6899.

It is an arithmetic number, because the mean of its divisors is an integer number (3746544).

Almost surely, 2^22459209 is an apocalyptic number.

It is an amenable number.

22459209 is a deficient number, since it is larger than the sum of its proper divisors (7513143).

22459209 is a wasteful number, since it uses less digits than its factorization.

22459209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 22459209 is about 4739.1147907600. The cubic root of 22459209 is about 282.1401019043.

The spelling of 22459209 in words is "twenty-two million, four hundred fifty-nine thousand, two hundred nine".