8791989 has 8 divisors (see below), whose sum is σ = 11871360. Its totient is φ = 5786976.

The previous prime is 8791987. The next prime is 8792027. The reversal of 8791989 is 9891978.

8791989 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 8791989 - 2¹ = 8791987 is a prime.

It is a super-2 number, since 2×8791989² = 154598141152242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8791987) 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, 18312 + ... + 18785.

It is an arithmetic number, because the mean of its divisors is an integer number (1483920).

Almost surely, 2^8791989 is an apocalyptic number.

It is an amenable number.

8791989 is a deficient number, since it is larger than the sum of its proper divisors (3079371).

8791989 is a wasteful number, since it uses less digits than its factorization.

8791989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37179.

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

The square root of 8791989 is about 2965.1288336260. The cubic root of 8791989 is about 206.3933556166.

The spelling of 8791989 in words is "eight million, seven hundred ninety-one thousand, nine hundred eighty-nine".