104039993 has 2 divisors, whose sum is σ = 104039994. Its totient is φ = 104039992.

The previous prime is 104039989. The next prime is 104040011. The reversal of 104039993 is 399930401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103286569 + 753424 = 10163^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 104039993 - 2² = 104039989 is a prime.

It is not a weakly prime, because it can be changed into another prime (104009993) 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 as a sum of consecutive naturals, namely, 52019996 + 52019997.

It is an arithmetic number, because the mean of its divisors is an integer number (52019997).

Almost surely, 2^104039993 is an apocalyptic number.

It is an amenable number.

104039993 is a deficient number, since it is larger than the sum of its proper divisors (1).

104039993 is an equidigital number, since it uses as much as digits as its factorization.

104039993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 104039993 is about 10199.9996568627. Note that the first 3 decimals coincide. The cubic root of 104039993 is about 470.3272099011.

The spelling of 104039993 in words is "one hundred four million, thirty-nine thousand, nine hundred ninety-three".