104208491 has 2 divisors, whose sum is σ = 104208492. Its totient is φ = 104208490.

The previous prime is 104208463. The next prime is 104208493. The reversal of 104208491 is 194802401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104208491 is a prime.

It is a Sophie Germain prime.

Together with 104208493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104208493) 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, 52104245 + 52104246.

It is an arithmetic number, because the mean of its divisors is an integer number (52104246).

Almost surely, 2^104208491 is an apocalyptic number.

104208491 is a deficient number, since it is larger than the sum of its proper divisors (1).

104208491 is an equidigital number, since it uses as much as digits as its factorization.

104208491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 104208491 is about 10208.2560214760. The cubic root of 104208491 is about 470.5809791415.

The spelling of 104208491 in words is "one hundred four million, two hundred eight thousand, four hundred ninety-one".