8911491 has 8 divisors (see below), whose sum is σ = 11902800. Its totient is φ = 5930592.

The previous prime is 8911489. The next prime is 8911493. The reversal of 8911491 is 1941198.

It is an interprime number because it is at equal distance from previous prime (8911489) and next prime (8911493).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8911491 - 2¹ = 8911489 is a prime.

8911491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8911493) 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 7 ways as a sum of consecutive naturals, for example, 316 + ... + 4233.

It is an arithmetic number, because the mean of its divisors is an integer number (1487850).

Almost surely, 2^8911491 is an apocalyptic number.

8911491 is a deficient number, since it is larger than the sum of its proper divisors (2991309).

8911491 is a wasteful number, since it uses less digits than its factorization.

8911491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205.

The product of its digits is 2592, while the sum is 33.

The square root of 8911491 is about 2985.2120527695. The cubic root of 8911491 is about 207.3242601622.

The spelling of 8911491 in words is "eight million, nine hundred eleven thousand, four hundred ninety-one".