8991411 has 16 divisors (see below), whose sum is σ = 14085120. Its totient is φ = 5029920.

The previous prime is 8991401. The next prime is 8991431. The reversal of 8991411 is 1141998.

It is not a de Polignac number, because 8991411 - 2⁵ = 8991379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8991401) 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 15 ways as a sum of consecutive naturals, for example, 10051 + ... + 10908.

It is an arithmetic number, because the mean of its divisors is an integer number (880320).

Almost surely, 2^8991411 is an apocalyptic number.

8991411 is a deficient number, since it is larger than the sum of its proper divisors (5093709).

8991411 is a wasteful number, since it uses less digits than its factorization.

8991411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20986.

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

The square root of 8991411 is about 2998.5681583049. The cubic root of 8991411 is about 207.9421914671.

The spelling of 8991411 in words is "eight million, nine hundred ninety-one thousand, four hundred eleven".