22961789 has 4 divisors (see below), whose sum is σ = 23080956. Its totient is φ = 22842624.

The previous prime is 22961779. The next prime is 22961791. The reversal of 22961789 is 98716922.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5026564 + 17935225 = 2242^2 + 4235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22961789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22961779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59294 + ... + 59679.

It is an arithmetic number, because the mean of its divisors is an integer number (5770239).

Almost surely, 2^22961789 is an apocalyptic number.

It is an amenable number.

22961789 is a deficient number, since it is larger than the sum of its proper divisors (119167).

22961789 is a wasteful number, since it uses less digits than its factorization.

22961789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119166.

The product of its digits is 108864, while the sum is 44.

The square root of 22961789 is about 4791.8460951913. The cubic root of 22961789 is about 284.2291222827.

The spelling of 22961789 in words is "twenty-two million, nine hundred sixty-one thousand, seven hundred eighty-nine".