9943966 has 8 divisors (see below), whose sum is σ = 15197544. Its totient is φ = 4878120.

The previous prime is 9943957. The next prime is 9943993. The reversal of 9943966 is 6693499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46800 + ... + 47011.

It is an arithmetic number, because the mean of its divisors is an integer number (1899693).

Almost surely, 2^9943966 is an apocalyptic number.

9943966 is a deficient number, since it is larger than the sum of its proper divisors (5253578).

9943966 is a wasteful number, since it uses less digits than its factorization.

9943966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93866.

The product of its digits is 314928, while the sum is 46.

The square root of 9943966 is about 3153.4054607678. The cubic root of 9943966 is about 215.0403097306.

The spelling of 9943966 in words is "nine million, nine hundred forty-three thousand, nine hundred sixty-six".