104081993 has 4 divisors (see below), whose sum is σ = 104172048. Its totient is φ = 103991940.

The previous prime is 104081977. The next prime is 104082001. The reversal of 104081993 is 399180401.

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 104081993 - 2⁴ = 104081977 is a prime.

It is a super-2 number, since 2×104081993² = 21666122533704098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104081963) 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, 43271 + ... + 45612.

It is an arithmetic number, because the mean of its divisors is an integer number (26043012).

Almost surely, 2^104081993 is an apocalyptic number.

It is an amenable number.

104081993 is a deficient number, since it is larger than the sum of its proper divisors (90055).

104081993 is an equidigital number, since it uses as much as digits as its factorization.

104081993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90054.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 104081993 is about 10202.0582727212. The cubic root of 104081993 is about 470.3904903272.

The spelling of 104081993 in words is "one hundred four million, eighty-one thousand, nine hundred ninety-three".