104187289 has 4 divisors (see below), whose sum is σ = 104256100. Its totient is φ = 104118480.

The previous prime is 104187277. The next prime is 104187331. The reversal of 104187289 is 982781401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56370064 + 47817225 = 7508^2 + 6915^2 .

It is a cyclic number.

It is not a de Polignac number, because 104187289 - 2²⁵ = 70632857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104187229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32082 + ... + 35179.

It is an arithmetic number, because the mean of its divisors is an integer number (26064025).

Almost surely, 2^104187289 is an apocalyptic number.

It is an amenable number.

104187289 is a deficient number, since it is larger than the sum of its proper divisors (68811).

104187289 is an equidigital number, since it uses as much as digits as its factorization.

104187289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68810.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 104187289 is about 10207.2174954784. The cubic root of 104187289 is about 470.5490625656.

The spelling of 104187289 in words is "one hundred four million, one hundred eighty-seven thousand, two hundred eighty-nine".