104595991 has 2 divisors, whose sum is σ = 104595992. Its totient is φ = 104595990.

The previous prime is 104595989. The next prime is 104596001. The reversal of 104595991 is 199595401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104595991 - 2¹ = 104595989 is a prime.

Together with 104595989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104595791) 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 as a sum of consecutive naturals, namely, 52297995 + 52297996.

It is an arithmetic number, because the mean of its divisors is an integer number (52297996).

Almost surely, 2^104595991 is an apocalyptic number.

104595991 is a deficient number, since it is larger than the sum of its proper divisors (1).

104595991 is an equidigital number, since it uses as much as digits as its factorization.

104595991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 43.

The square root of 104595991 is about 10227.2181457129. The cubic root of 104595991 is about 471.1635438635.

The spelling of 104595991 in words is "one hundred four million, five hundred ninety-five thousand, nine hundred ninety-one".