993946 has 8 divisors (see below), whose sum is σ = 1542420. Its totient is φ = 479808.

The previous prime is 993943. The next prime is 993961. The reversal of 993946 is 649399.

It can be written as a sum of positive squares in 2 ways, for example, as 881721 + 112225 = 939^2 + 335^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 993899 and 993908.

It is not an unprimeable number, because it can be changed into a prime (993943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8511 + ... + 8626.

2⁹⁹³⁹⁴⁶ is an apocalyptic number.

993946 is a deficient number, since it is larger than the sum of its proper divisors (548474).

993946 is a wasteful number, since it uses less digits than its factorization.

993946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17168.

The product of its digits is 52488, while the sum is 40.

The square root of 993946 is about 996.9684047150. The cubic root of 993946 is about 99.7977913924.

The spelling of 993946 in words is "nine hundred ninety-three thousand, nine hundred forty-six".