993787023 has 4 divisors (see below), whose sum is σ = 1325049368. Its totient is φ = 662524680.

The previous prime is 993787009. The next prime is 993787049. The reversal of 993787023 is 320787399.

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

It is not a de Polignac number, because 993787023 - 2¹⁰ = 993785999 is a prime.

It is a super-2 number, since 2×993787023² = 1975225294166405058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993787073) 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, 165631168 + ... + 165631173.

It is an arithmetic number, because the mean of its divisors is an integer number (331262342).

Almost surely, 2^993787023 is an apocalyptic number.

993787023 is a deficient number, since it is larger than the sum of its proper divisors (331262345).

993787023 is a wasteful number, since it uses less digits than its factorization.

993787023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331262344.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 993787023 is about 31524.3877498041. The cubic root of 993787023 is about 997.9247037916.

The spelling of 993787023 in words is "nine hundred ninety-three million, seven hundred eighty-seven thousand, twenty-three".