8991134 has 8 divisors (see below), whose sum is σ = 13557888. Its totient is φ = 4471840.

The previous prime is 8991127. The next prime is 8991139. The reversal of 8991134 is 4311998.

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

It is a junction number, because it is equal to n+sod(n) for n = 8991094 and 8991103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991139) 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 3 ways as a sum of consecutive naturals, for example, 11387 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (1694736).

Almost surely, 2^8991134 is an apocalyptic number.

8991134 is a deficient number, since it is larger than the sum of its proper divisors (4566754).

8991134 is a wasteful number, since it uses less digits than its factorization.

8991134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23730.

The product of its digits is 7776, while the sum is 35.

The square root of 8991134 is about 2998.5219692375. The cubic root of 8991134 is about 207.9400560744.

The spelling of 8991134 in words is "eight million, nine hundred ninety-one thousand, one hundred thirty-four".