104020289 has 2 divisors, whose sum is σ = 104020290. Its totient is φ = 104020288.

The previous prime is 104020277. The next prime is 104020309. The reversal of 104020289 is 982020401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101103025 + 2917264 = 10055^2 + 1708^2 .

It is a cyclic number.

It is not a de Polignac number, because 104020289 - 2²⁴ = 87243073 is a prime.

It is not a weakly prime, because it can be changed into another prime (104020219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52010144 + 52010145.

It is an arithmetic number, because the mean of its divisors is an integer number (52010145).

Almost surely, 2^104020289 is an apocalyptic number.

It is an amenable number.

104020289 is a deficient number, since it is larger than the sum of its proper divisors (1).

104020289 is an equidigital number, since it uses as much as digits as its factorization.

104020289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 104020289 is about 10199.0337287412. The cubic root of 104020289 is about 470.2975164721.

The spelling of 104020289 in words is "one hundred four million, twenty thousand, two hundred eighty-nine".