104003989 has 2 divisors, whose sum is σ = 104003990. Its totient is φ = 104003988.

The previous prime is 104003969. The next prime is 104004023. The reversal of 104003989 is 989300401.

It is an a-pointer prime, because the next prime (104004023) can be obtained adding 104003989 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103184964 + 819025 = 10158^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 104003989 - 2⁹ = 104003477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104003959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52001994 + 52001995.

It is an arithmetic number, because the mean of its divisors is an integer number (52001995).

Almost surely, 2^104003989 is an apocalyptic number.

It is an amenable number.

104003989 is a deficient number, since it is larger than the sum of its proper divisors (1).

104003989 is an equidigital number, since it uses as much as digits as its factorization.

104003989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 104003989 is about 10198.2346021260. The cubic root of 104003989 is about 470.2729499507.

The spelling of 104003989 in words is "one hundred four million, three thousand, nine hundred eighty-nine".