9943384066 has 16 divisors (see below), whose sum is σ = 18595419840. Its totient is φ = 3874045680.

The previous prime is 9943384049. The next prime is 9943384067. The reversal of 9943384066 is 6604833499.

It is a super-3 number, since 3×9943384066³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9943384067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32283561 + ... + 32283868.

It is an arithmetic number, because the mean of its divisors is an integer number (1162213740).

Almost surely, 2^9943384066 is an apocalyptic number.

9943384066 is a deficient number, since it is larger than the sum of its proper divisors (8652035774).

9943384066 is a wasteful number, since it uses less digits than its factorization.

9943384066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64567449.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The square root of 9943384066 is about 99716.5185212560. The cubic root of 9943384066 is about 2150.3611483462.

The spelling of 9943384066 in words is "nine billion, nine hundred forty-three million, three hundred eighty-four thousand, sixty-six".