104143993 has 4 divisors (see below), whose sum is σ = 106109028. Its totient is φ = 102178960.

The previous prime is 104143969. The next prime is 104143999. The reversal of 104143993 is 399341401.

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

It can be written as a sum of positive squares in 2 ways, for example, as 53406864 + 50737129 = 7308^2 + 7123^2 .

It is a cyclic number.

It is not a de Polignac number, because 104143993 - 2¹⁷ = 104012921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104143999) 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, 982438 + ... + 982543.

It is an arithmetic number, because the mean of its divisors is an integer number (26527257).

Almost surely, 2^104143993 is an apocalyptic number.

It is an amenable number.

104143993 is a deficient number, since it is larger than the sum of its proper divisors (1965035).

104143993 is an equidigital number, since it uses as much as digits as its factorization.

104143993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965034.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 104143993 is about 10205.0964228664. The cubic root of 104143993 is about 470.4838731837.

The spelling of 104143993 in words is "one hundred four million, one hundred forty-three thousand, nine hundred ninety-three".