22443009 has 48 divisors (see below), whose sum is σ = 35551872. Its totient is φ = 12519936.

The previous prime is 22443007. The next prime is 22443011. The reversal of 22443009 is 90034422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22443007) and next prime (22443011).

It is not a de Polignac number, because 22443009 - 2¹ = 22443007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22443009.

It is not an unprimeable number, because it can be changed into a prime (22443007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 423427 + ... + 423479.

It is an arithmetic number, because the mean of its divisors is an integer number (740664).

Almost surely, 2^22443009 is an apocalyptic number.

It is an amenable number.

22443009 is a deficient number, since it is larger than the sum of its proper divisors (13108863).

22443009 is a wasteful number, since it uses less digits than its factorization.

22443009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22443009 is about 4737.4053024836. The cubic root of 22443009 is about 282.0722489797.

It can be divided in two parts, 2244 and 3009, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 22443009 in words is "twenty-two million, four hundred forty-three thousand, nine".