104378993 has 2 divisors, whose sum is σ = 104378994. Its totient is φ = 104378992.

The previous prime is 104378971. The next prime is 104379013. The reversal of 104378993 is 399873401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66716224 + 37662769 = 8168^2 + 6137^2 .

It is an emirp because it is prime and its reverse (399873401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104378993 - 2⁸ = 104378737 is a prime.

It is not a weakly prime, because it can be changed into another prime (104378903) 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, 52189496 + 52189497.

It is an arithmetic number, because the mean of its divisors is an integer number (52189497).

Almost surely, 2^104378993 is an apocalyptic number.

It is an amenable number.

104378993 is a deficient number, since it is larger than the sum of its proper divisors (1).

104378993 is an equidigital number, since it uses as much as digits as its factorization.

104378993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 104378993 is about 10216.6037899098. The cubic root of 104378993 is about 470.8374882414.

The spelling of 104378993 in words is "one hundred four million, three hundred seventy-eight thousand, nine hundred ninety-three".