8991798 has 32 divisors (see below), whose sum is σ = 19215360. Its totient is φ = 2798880.

The previous prime is 8991779. The next prime is 8991799. The reversal of 8991798 is 8971998.

It is a self number, because there is not a number n which added to its sum of digits gives 8991798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4561 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (600480).

Almost surely, 2^8991798 is an apocalyptic number.

8991798 is an abundant number, since it is smaller than the sum of its proper divisors (10223562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8991798 is a wasteful number, since it uses less digits than its factorization.

8991798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its digits is 326592, while the sum is 51.

The square root of 8991798 is about 2998.6326884098. The cubic root of 8991798 is about 207.9451747761.

The spelling of 8991798 in words is "eight million, nine hundred ninety-one thousand, seven hundred ninety-eight".