40446012440 has 32 divisors (see below), whose sum is σ = 94960205280. Its totient is φ = 15474995712.

The previous prime is 40446012433. The next prime is 40446012461. The reversal of 40446012440 is 4421064404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21980609 + ... + 21982448.

It is an arithmetic number, because the mean of its divisors is an integer number (2967506415).

Almost surely, 2^40446012440 is an apocalyptic number.

40446012440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40446012440 is an abundant number, since it is smaller than the sum of its proper divisors (54514192840).

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

40446012440 is a wasteful number, since it uses less digits than its factorization.

40446012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43963091 (or 43963087 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 40446012440 its reverse (4421064404), we get a palindrome (44867076844).

The spelling of 40446012440 in words is "forty billion, four hundred forty-six million, twelve thousand, four hundred forty".