40219444 has 12 divisors (see below), whose sum is σ = 72286564. Its totient is φ = 19566144.

The previous prime is 40219427. The next prime is 40219507. The reversal of 40219444 is 44491204.

40219444 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 34363044 + 5856400 = 5862^2 + 2420^2 .

It is a congruent number.

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, 135729 + ... + 136024.

Almost surely, 2^40219444 is an apocalyptic number.

It is an amenable number.

40219444 is a deficient number, since it is larger than the sum of its proper divisors (32067120).

40219444 is a wasteful number, since it uses less digits than its factorization.

40219444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271794 (or 271792 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40219444 is about 6341.8801628539. The cubic root of 40219444 is about 342.6194557301.

The spelling of 40219444 in words is "forty million, two hundred nineteen thousand, four hundred forty-four".