103918993 has 4 divisors (see below), whose sum is σ = 103966720. Its totient is φ = 103871268.

The previous prime is 103918979. The next prime is 103919009. The reversal of 103918993 is 399819301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103918993 - 2⁹ = 103918481 is a prime.

It is a super-2 number, since 2×103918993² = 21598314212268098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103918693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20433 + ... + 25006.

It is an arithmetic number, because the mean of its divisors is an integer number (25991680).

Almost surely, 2^103918993 is an apocalyptic number.

It is an amenable number.

103918993 is a deficient number, since it is larger than the sum of its proper divisors (47727).

103918993 is an equidigital number, since it uses as much as digits as its factorization.

103918993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47726.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 103918993 is about 10194.0665585428. The cubic root of 103918993 is about 470.1448067462.

The spelling of 103918993 in words is "one hundred three million, nine hundred eighteen thousand, nine hundred ninety-three".