40443812 has 12 divisors (see below), whose sum is σ = 72689820. Its totient is φ = 19675296.

The previous prime is 40443791. The next prime is 40443839. The reversal of 40443812 is 21834404.

40443812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 10588516 = 5464^2 + 3254^2 .

It is an unprimeable number.

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, 136487 + ... + 136782.

It is an arithmetic number, because the mean of its divisors is an integer number (6057485).

Almost surely, 2^40443812 is an apocalyptic number.

It is an amenable number.

40443812 is a deficient number, since it is larger than the sum of its proper divisors (32246008).

40443812 is a wasteful number, since it uses less digits than its factorization.

40443812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273310 (or 273308 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40443812 is about 6359.5449522745. The cubic root of 40443812 is about 343.2553864169.

The spelling of 40443812 in words is "forty million, four hundred forty-three thousand, eight hundred twelve".