8991936 has 84 divisors (see below), whose sum is σ = 26270712. Its totient is φ = 2939904.

The previous prime is 8991901. The next prime is 8991967. The reversal of 8991936 is 6391998.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 8991891 and 8991900.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38476 + ... + 38708.

Almost surely, 2^8991936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8991936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13135356).

8991936 is an abundant number, since it is smaller than the sum of its proper divisors (17278776).

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

8991936 is a wasteful number, since it uses less digits than its factorization.

8991936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 305 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 8991936 is about 2998.6556988091. The cubic root of 8991936 is about 207.9462385710.

The spelling of 8991936 in words is "eight million, nine hundred ninety-one thousand, nine hundred thirty-six".