1087109 has 2 divisors, whose sum is σ = 1087110. Its totient is φ = 1087108.

The previous prime is 1087091. The next prime is 1087117. The reversal of 1087109 is 9017801.

Together with previous prime (1087091) 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., 592900 + 494209 = 770^2 + 703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543554 + 543555.

It is an arithmetic number, because the mean of its divisors is an integer number (543555).

2^1087109 is an apocalyptic number.

It is an amenable number.

1087109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087109 is an equidigital number, since it uses as much as digits as its factorization.

1087109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1087109 is about 1042.6451937260. The cubic root of 1087109 is about 102.8231798325.

The spelling of 1087109 in words is "one million, eighty-seven thousand, one hundred nine".