9993946 has 8 divisors (see below), whose sum is σ = 15123924. Its totient is φ = 4952640.

The previous prime is 9993941. The next prime is 9993967. The reversal of 9993946 is 6493999.

It can be written as a sum of positive squares in 2 ways, for example, as 9991921 + 2025 = 3161^2 + 45^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 9993946.

It is not an unprimeable number, because it can be changed into a prime (9993941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21885 + ... + 22336.

Almost surely, 2^9993946 is an apocalyptic number.

9993946 is a deficient number, since it is larger than the sum of its proper divisors (5129978).

9993946 is a wasteful number, since it uses less digits than its factorization.

9993946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44336.

The product of its digits is 472392, while the sum is 49.

The square root of 9993946 is about 3161.3202938013. The cubic root of 9993946 is about 215.3999837346.

The spelling of 9993946 in words is "nine million, nine hundred ninety-three thousand, nine hundred forty-six".