9115091 has 2 divisors, whose sum is σ = 9115092. Its totient is φ = 9115090.

The previous prime is 9115069. The next prime is 9115109. The reversal of 9115091 is 1905119.

It is a happy number.

9115091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (9115109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9115091 - 2¹⁸ = 8852947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9115091.

It is not a weakly prime, because it can be changed into another prime (9112091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4557545 + 4557546.

It is an arithmetic number, because the mean of its divisors is an integer number (4557546).

Almost surely, 2^9115091 is an apocalyptic number.

9115091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9115091 is an equidigital number, since it uses as much as digits as its factorization.

9115091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 9115091 is about 3019.1208985398. The cubic root of 9115091 is about 208.8912921085.

The spelling of 9115091 in words is "nine million, one hundred fifteen thousand, ninety-one".