9087391 has 2 divisors, whose sum is σ = 9087392. Its totient is φ = 9087390.

The previous prime is 9087389. The next prime is 9087409. The reversal of 9087391 is 1937809.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9087391 - 2¹ = 9087389 is a prime.

Together with 9087389, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9087391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9087191) 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, 4543695 + 4543696.

It is an arithmetic number, because the mean of its divisors is an integer number (4543696).

Almost surely, 2^9087391 is an apocalyptic number.

9087391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9087391 is an equidigital number, since it uses as much as digits as its factorization.

9087391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 9087391 is about 3014.5299799471. The cubic root of 9087391 is about 208.6794763385.

The spelling of 9087391 in words is "nine million, eighty-seven thousand, three hundred ninety-one".