22689539 has 4 divisors (see below), whose sum is σ = 22704024. Its totient is φ = 22675056.

The previous prime is 22689533. The next prime is 22689559. The reversal of 22689539 is 93598622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22689539 - 2⁸ = 22689283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22689539.

It is not an unprimeable number, because it can be changed into a prime (22689533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4562 + ... + 8135.

It is an arithmetic number, because the mean of its divisors is an integer number (5676006).

Almost surely, 2^22689539 is an apocalyptic number.

22689539 is a deficient number, since it is larger than the sum of its proper divisors (14485).

22689539 is a wasteful number, since it uses less digits than its factorization.

22689539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14484.

The product of its digits is 233280, while the sum is 44.

The square root of 22689539 is about 4763.3537554962. The cubic root of 22689539 is about 283.1013176331.

The spelling of 22689539 in words is "twenty-two million, six hundred eighty-nine thousand, five hundred thirty-nine".