9943679942 has 16 divisors (see below), whose sum is σ = 17047618560. Its totient is φ = 4261249608.

The previous prime is 9943679929. The next prime is 9943679971. The reversal of 9943679942 is 2499763499.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283109 + ... + 316287.

It is an arithmetic number, because the mean of its divisors is an integer number (1065476160).

Almost surely, 2^9943679942 is an apocalyptic number.

9943679942 is a deficient number, since it is larger than the sum of its proper divisors (7103938618).

9943679942 is a wasteful number, since it uses less digits than its factorization.

9943679942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54595.

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

The square root of 9943679942 is about 99718.0020959104. The cubic root of 9943679942 is about 2150.3824768980.

The spelling of 9943679942 in words is "nine billion, nine hundred forty-three million, six hundred seventy-nine thousand, nine hundred forty-two".