22694989 has 4 divisors (see below), whose sum is σ = 23067100. Its totient is φ = 22322880.

The previous prime is 22694963. The next prime is 22695011. The reversal of 22694989 is 98949622.

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 11168964 + 11526025 = 3342^2 + 3395^2 .

It is a cyclic number.

It is not a de Polignac number, because 22694989 - 2⁵ = 22694957 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 (22694909) 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, 185964 + ... + 186085.

It is an arithmetic number, because the mean of its divisors is an integer number (5766775).

Almost surely, 2^22694989 is an apocalyptic number.

It is an amenable number.

22694989 is a deficient number, since it is larger than the sum of its proper divisors (372111).

22694989 is an equidigital number, since it uses as much as digits as its factorization.

22694989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372110.

The product of its digits is 559872, while the sum is 49.

The square root of 22694989 is about 4763.9257970712. The cubic root of 22694989 is about 283.1239826839.

The spelling of 22694989 in words is "twenty-two million, six hundred ninety-four thousand, nine hundred eighty-nine".