22909943 has 4 divisors (see below), whose sum is σ = 26182800. Its totient is φ = 19637088.

The previous prime is 22909891. The next prime is 22909949. The reversal of 22909943 is 34990922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34990922 = 2 ⋅17495461.

It is a cyclic number.

It is not a de Polignac number, because 22909943 - 2¹⁶ = 22844407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22909897 and 22909906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22909949) 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, 1636418 + ... + 1636431.

It is an arithmetic number, because the mean of its divisors is an integer number (6545700).

Almost surely, 2^22909943 is an apocalyptic number.

22909943 is a deficient number, since it is larger than the sum of its proper divisors (3272857).

22909943 is an equidigital number, since it uses as much as digits as its factorization.

22909943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272856.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 22909943 is about 4786.4332231840. The cubic root of 22909943 is about 284.0150383824.

The spelling of 22909943 in words is "twenty-two million, nine hundred nine thousand, nine hundred forty-three".