104401987 has 2 divisors, whose sum is σ = 104401988. Its totient is φ = 104401986.

The previous prime is 104401963. The next prime is 104402003. The reversal of 104401987 is 789104401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 104401987 - 2¹⁹ = 103877699 is a prime.

It is not a weakly prime, because it can be changed into another prime (104401907) 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, 52200993 + 52200994.

It is an arithmetic number, because the mean of its divisors is an integer number (52200994).

Almost surely, 2^104401987 is an apocalyptic number.

104401987 is a deficient number, since it is larger than the sum of its proper divisors (1).

104401987 is an equidigital number, since it uses as much as digits as its factorization.

104401987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 104401987 is about 10217.7290529745. The cubic root of 104401987 is about 470.8720598283.

The spelling of 104401987 in words is "one hundred four million, four hundred one thousand, nine hundred eighty-seven".