104287109 has 2 divisors, whose sum is σ = 104287110. Its totient is φ = 104287108.

The previous prime is 104287091. The next prime is 104287121. The reversal of 104287109 is 901782401.

Together with previous prime (104287091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93064609 + 11222500 = 9647^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 104287109 - 2¹² = 104283013 is a prime.

It is a super-2 number, since 2×104287109² = 21751602207155762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104280109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52143554 + 52143555.

It is an arithmetic number, because the mean of its divisors is an integer number (52143555).

Almost surely, 2^104287109 is an apocalyptic number.

It is an amenable number.

104287109 is a deficient number, since it is larger than the sum of its proper divisors (1).

104287109 is an equidigital number, since it uses as much as digits as its factorization.

104287109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 104287109 is about 10212.1060021917. The cubic root of 104287109 is about 470.6992895123.

The spelling of 104287109 in words is "one hundred four million, two hundred eighty-seven thousand, one hundred nine".