40443832387 has 32 divisors (see below), whose sum is σ = 48584793600. Its totient is φ = 32946870528.

The previous prime is 40443832333. The next prime is 40443832391. The reversal of 40443832387 is 78323834404.

It is a cyclic number.

It is not a de Polignac number, because 40443832387 - 2¹⁵ = 40443799619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40443832327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1902664 + ... + 1923802.

It is an arithmetic number, because the mean of its divisors is an integer number (1518274800).

Almost surely, 2^40443832387 is an apocalyptic number.

40443832387 is a deficient number, since it is larger than the sum of its proper divisors (8140961213).

40443832387 is a wasteful number, since it uses less digits than its factorization.

40443832387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21355.

The product of its (nonzero) digits is 1548288, while the sum is 46.

The spelling of 40443832387 in words is "forty billion, four hundred forty-three million, eight hundred thirty-two thousand, three hundred eighty-seven".