913091 has 4 divisors (see below), whose sum is σ = 919800. Its totient is φ = 906384.

The previous prime is 913067. The next prime is 913103. The reversal of 913091 is 190319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190319 = 83 ⋅2293.

It is a cyclic number.

It is not a de Polignac number, because 913091 - 2⁶ = 913027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (943091) 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 in 3 ways as a sum of consecutive naturals, for example, 3146 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (229950).

2⁹¹³⁰⁹¹ is an apocalyptic number.

913091 is a deficient number, since it is larger than the sum of its proper divisors (6709).

913091 is a wasteful number, since it uses less digits than its factorization.

913091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 913091 is about 955.5579521934. The cubic root of 913091 is about 97.0148062565.

The spelling of 913091 in words is "nine hundred thirteen thousand, ninety-one".