9161091 has 12 divisors (see below), whose sum is σ = 13302432. Its totient is φ = 6075216.

The previous prime is 9161083. The next prime is 9161093. The reversal of 9161091 is 1901619.

It is not a de Polignac number, because 9161091 - 2³ = 9161083 is a prime.

9161091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9161093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811 + ... + 4356.

It is an arithmetic number, because the mean of its divisors is an integer number (1108536).

Almost surely, 2^9161091 is an apocalyptic number.

9161091 is a deficient number, since it is larger than the sum of its proper divisors (4141341).

9161091 is a wasteful number, since it uses less digits than its factorization.

9161091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370 (or 5367 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 9161091 is about 3026.7294229911. The cubic root of 9161091 is about 209.2420979103.

The spelling of 9161091 in words is "nine million, one hundred sixty-one thousand, ninety-one".