40022443 has 4 divisors (see below), whose sum is σ = 40291200. Its totient is φ = 39753688.

The previous prime is 40022441. The next prime is 40022447. The reversal of 40022443 is 34422004.

40022443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40022443 - 2¹ = 40022441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40022443.

It is not an unprimeable number, because it can be changed into a prime (40022441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134155 + ... + 134452.

It is an arithmetic number, because the mean of its divisors is an integer number (10072800).

Almost surely, 2^40022443 is an apocalyptic number.

40022443 is a deficient number, since it is larger than the sum of its proper divisors (268757).

40022443 is a wasteful number, since it uses less digits than its factorization.

40022443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268756.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40022443 is about 6326.3293464694. The cubic root of 40022443 is about 342.0591390269.

Adding to 40022443 its reverse (34422004), we get a palindrome (74444447).

The spelling of 40022443 in words is "forty million, twenty-two thousand, four hundred forty-three".