22939817 has 4 divisors (see below), whose sum is σ = 24289236. Its totient is φ = 21590400.

The previous prime is 22939801. The next prime is 22939853. The reversal of 22939817 is 71893922.

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 20214016 + 2725801 = 4496^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 22939817 - 2⁴ = 22939801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22939867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674684 + ... + 674717.

It is an arithmetic number, because the mean of its divisors is an integer number (6072309).

Almost surely, 2^22939817 is an apocalyptic number.

It is an amenable number.

22939817 is a deficient number, since it is larger than the sum of its proper divisors (1349419).

22939817 is a wasteful number, since it uses less digits than its factorization.

22939817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349418.

The product of its digits is 54432, while the sum is 41.

The square root of 22939817 is about 4789.5529018897. The cubic root of 22939817 is about 284.1384342953.

The spelling of 22939817 in words is "twenty-two million, nine hundred thirty-nine thousand, eight hundred seventeen".