104399993 has 2 divisors, whose sum is σ = 104399994. Its totient is φ = 104399992.

The previous prime is 104399989. The next prime is 104400011. The reversal of 104399993 is 399993401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101344489 + 3055504 = 10067^2 + 1748^2 .

It is an emirp because it is prime and its reverse (399993401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104399993 - 2² = 104399989 is a prime.

It is not a weakly prime, because it can be changed into another prime (104399923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52199996 + 52199997.

It is an arithmetic number, because the mean of its divisors is an integer number (52199997).

Almost surely, 2^104399993 is an apocalyptic number.

It is an amenable number.

104399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

104399993 is an equidigital number, since it uses as much as digits as its factorization.

104399993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 104399993 is about 10217.6314770107. The cubic root of 104399993 is about 470.8690620410.

The spelling of 104399993 in words is "one hundred four million, three hundred ninety-nine thousand, nine hundred ninety-three".