8991039 has 8 divisors (see below), whose sum is σ = 12012160. Its totient is φ = 5981976.

The previous prime is 8991029. The next prime is 8991041. The reversal of 8991039 is 9301998.

8991039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8991039 - 2⁵ = 8991007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8990988 and 8991006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099 + ... + 4380.

It is an arithmetic number, because the mean of its divisors is an integer number (1501520).

Almost surely, 2^8991039 is an apocalyptic number.

8991039 is a deficient number, since it is larger than the sum of its proper divisors (3021121).

8991039 is a wasteful number, since it uses less digits than its factorization.

8991039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 8991039 is about 2998.5061280578. The cubic root of 8991039 is about 207.9393237095.

The spelling of 8991039 in words is "eight million, nine hundred ninety-one thousand, thirty-nine".