9943940529 has 24 divisors (see below), whose sum is σ = 15640809600. Its totient is φ = 6063815520.

The previous prime is 9943940467. The next prime is 9943940537. The reversal of 9943940529 is 9250493499.

9943940529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9943940529 - 2²¹ = 9941843377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9943940569) 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 23 ways as a sum of consecutive naturals, for example, 997657 + ... + 1007574.

It is an arithmetic number, because the mean of its divisors is an integer number (651700400).

Almost surely, 2^9943940529 is an apocalyptic number.

It is an amenable number.

9943940529 is a deficient number, since it is larger than the sum of its proper divisors (5696869071).

9943940529 is a wasteful number, since it uses less digits than its factorization.

9943940529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005285 (or 2005282 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The square root of 9943940529 is about 99719.3087069901. The cubic root of 9943940529 is about 2150.4012612524.

The spelling of 9943940529 in words is "nine billion, nine hundred forty-three million, nine hundred forty thousand, five hundred twenty-nine".