40432220444 has 144 divisors (see below), whose sum is σ = 93939181056. Its totient is φ = 15028675200.

The previous prime is 40432220443. The next prime is 40432220447. The reversal of 40432220444 is 44402223404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40432220443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24941954 + ... + 24943574.

It is an arithmetic number, because the mean of its divisors is an integer number (652355424).

Almost surely, 2^40432220444 is an apocalyptic number.

40432220444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40432220444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46969590528).

40432220444 is an abundant number, since it is smaller than the sum of its proper divisors (53506960612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40432220444 is a wasteful number, since it uses less digits than its factorization.

40432220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2167 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 40432220444 its reverse (44402223404), we get a palindrome (84834443848).

The spelling of 40432220444 in words is "forty billion, four hundred thirty-two million, two hundred twenty thousand, four hundred forty-four".