22043859 has 4 divisors (see below), whose sum is σ = 29391816. Its totient is φ = 14695904.

The previous prime is 22043851. The next prime is 22043891. The reversal of 22043859 is 95834022.

It is a happy number.

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 22043859 - 2³ = 22043851 is a prime.

It is a super-2 number, since 2×22043859² = 971863439223762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22043851) 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, 3673974 + ... + 3673979.

It is an arithmetic number, because the mean of its divisors is an integer number (7347954).

Almost surely, 2^22043859 is an apocalyptic number.

22043859 is a deficient number, since it is larger than the sum of its proper divisors (7347957).

22043859 is an equidigital number, since it uses as much as digits as its factorization.

22043859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347956.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 22043859 is about 4695.0888170513. The cubic root of 22043859 is about 280.3900134687.

The spelling of 22043859 in words is "twenty-two million, forty-three thousand, eight hundred fifty-nine".