22149843 has 4 divisors (see below), whose sum is σ = 29533128. Its totient is φ = 14766560.

The previous prime is 22149833. The next prime is 22149871. The reversal of 22149843 is 34894122.

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

It is a cyclic number.

It is not a de Polignac number, because 22149843 - 2⁵ = 22149811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22149833) 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, 3691638 + ... + 3691643.

It is an arithmetic number, because the mean of its divisors is an integer number (7383282).

Almost surely, 2^22149843 is an apocalyptic number.

22149843 is a deficient number, since it is larger than the sum of its proper divisors (7383285).

22149843 is an equidigital number, since it uses as much as digits as its factorization.

22149843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383284.

The product of its digits is 13824, while the sum is 33.

The square root of 22149843 is about 4706.3619707796. The cubic root of 22149843 is about 280.8386547747.

The spelling of 22149843 in words is "twenty-two million, one hundred forty-nine thousand, eight hundred forty-three".