9943249679 has 16 divisors (see below), whose sum is σ = 10906182144. Its totient is φ = 8990268000.

The previous prime is 9943249643. The next prime is 9943249681. The reversal of 9943249679 is 9769423499.

9943249679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9943249679 - 2²⁴ = 9926472463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9943249579) 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 15 ways as a sum of consecutive naturals, for example, 2025542 + ... + 2030444.

It is an arithmetic number, because the mean of its divisors is an integer number (681636384).

Almost surely, 2^9943249679 is an apocalyptic number.

9943249679 is a deficient number, since it is larger than the sum of its proper divisors (962932465).

9943249679 is a wasteful number, since it uses less digits than its factorization.

9943249679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878.

The product of its digits is 26453952, while the sum is 62.

The square root of 9943249679 is about 99715.8446737528. The cubic root of 9943249679 is about 2150.3514607696.

The spelling of 9943249679 in words is "nine billion, nine hundred forty-three million, two hundred forty-nine thousand, six hundred seventy-nine".