22917089 has 4 divisors (see below), whose sum is σ = 24679956. Its totient is φ = 21154224.

The previous prime is 22917079. The next prime is 22917101. The reversal of 22917089 is 98071922.

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 2739025 + 20178064 = 1655^2 + 4492^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22917089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22917049) 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, 881414 + ... + 881439.

It is an arithmetic number, because the mean of its divisors is an integer number (6169989).

Almost surely, 2^22917089 is an apocalyptic number.

It is an amenable number.

22917089 is a deficient number, since it is larger than the sum of its proper divisors (1762867).

22917089 is a wasteful number, since it uses less digits than its factorization.

22917089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762866.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 22917089 is about 4787.1796498565. The cubic root of 22917089 is about 284.0445650161.

The spelling of 22917089 in words is "twenty-two million, nine hundred seventeen thousand, eighty-nine".