1087087409 has 2 divisors, whose sum is σ = 1087087410. Its totient is φ = 1087087408.

The previous prime is 1087087369. The next prime is 1087087453. The reversal of 1087087409 is 9047807801.

It is an a-pointer prime, because the next prime (1087087453) can be obtained adding 1087087409 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1027843600 + 59243809 = 32060^2 + 7697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087087409 - 2¹² = 1087083313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1087087409.

It is not a weakly prime, because it can be changed into another prime (1087087009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543543704 + 543543705.

It is an arithmetic number, because the mean of its divisors is an integer number (543543705).

Almost surely, 2^1087087409 is an apocalyptic number.

It is an amenable number.

1087087409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087087409 is an equidigital number, since it uses as much as digits as its factorization.

1087087409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 1087087409 is about 32971.0086136290. The cubic root of 1087087409 is about 1028.2249910652.

The spelling of 1087087409 in words is "one billion, eighty-seven million, eighty-seven thousand, four hundred nine".