104100091 has 2 divisors, whose sum is σ = 104100092. Its totient is φ = 104100090.

The previous prime is 104100089. The next prime is 104100133. The reversal of 104100091 is 190001401.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104100091 - 2¹ = 104100089 is a prime.

Together with 104100089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (104100071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52050045 + 52050046.

It is an arithmetic number, because the mean of its divisors is an integer number (52050046).

Almost surely, 2^104100091 is an apocalyptic number.

104100091 is a deficient number, since it is larger than the sum of its proper divisors (1).

104100091 is an equidigital number, since it uses as much as digits as its factorization.

104100091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 104100091 is about 10202.9452120454. The cubic root of 104100091 is about 470.4177529160.

Adding to 104100091 its reverse (190001401), we get a palindrome (294101492).

The spelling of 104100091 in words is "one hundred four million, one hundred thousand, ninety-one".