40400422443 has 12 divisors (see below), whose sum is σ = 58606624440. Its totient is φ = 26818018656.

The previous prime is 40400422357. The next prime is 40400422471. The reversal of 40400422443 is 34422400404.

It is a happy number.

It is not a de Polignac number, because 40400422443 - 2²⁰ = 40399373867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40400423443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9630813 + ... + 9635006.

It is an arithmetic number, because the mean of its divisors is an integer number (4883885370).

Almost surely, 2^40400422443 is an apocalyptic number.

40400422443 is a deficient number, since it is larger than the sum of its proper divisors (18206201997).

40400422443 is a wasteful number, since it uses less digits than its factorization.

40400422443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19266058 (or 19266055 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 40400422443 its reverse (34422400404), we get a palindrome (74822822847).

The spelling of 40400422443 in words is "forty billion, four hundred million, four hundred twenty-two thousand, four hundred forty-three".