993041243 has 4 divisors (see below), whose sum is σ = 998031600. Its totient is φ = 988050888.

The previous prime is 993041227. The next prime is 993041303. The reversal of 993041243 is 342140399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342140399 = 61 ⋅5608859.

It is a cyclic number.

It is not a de Polignac number, because 993041243 - 2⁴ = 993041227 is a prime.

It is a super-2 number, since 2×993041243² = 1972261820597970098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993041743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2494880 + ... + 2495277.

It is an arithmetic number, because the mean of its divisors is an integer number (249507900).

Almost surely, 2^993041243 is an apocalyptic number.

993041243 is a deficient number, since it is larger than the sum of its proper divisors (4990357).

993041243 is a wasteful number, since it uses less digits than its factorization.

993041243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990356.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 993041243 is about 31512.5569099050. The cubic root of 993041243 is about 997.6750129579.

The spelling of 993041243 in words is "nine hundred ninety-three million, forty-one thousand, two hundred forty-three".