993663742 has 4 divisors (see below), whose sum is σ = 1490495616. Its totient is φ = 496831870.

The previous prime is 993663731. The next prime is 993663751. The reversal of 993663742 is 247366399.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×993663742³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248415934 + ... + 248415937.

It is an arithmetic number, because the mean of its divisors is an integer number (372623904).

Almost surely, 2^993663742 is an apocalyptic number.

993663742 is a deficient number, since it is larger than the sum of its proper divisors (496831874).

993663742 is a wasteful number, since it uses less digits than its factorization.

993663742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496831873.

The product of its digits is 1469664, while the sum is 49.

The square root of 993663742 is about 31522.4323617325. The cubic root of 993663742 is about 997.8834373231.

The spelling of 993663742 in words is "nine hundred ninety-three million, six hundred sixty-three thousand, seven hundred forty-two".