8990789 has 4 divisors (see below), whose sum is σ = 9030624. Its totient is φ = 8950956.

The previous prime is 8990777. The next prime is 8990791. The reversal of 8990789 is 9870998.

8990789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9870998 = 2 ⋅4935499.

It is a cyclic number.

It is not a de Polignac number, because 8990789 - 2⁸ = 8990533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19577 + ... + 20030.

It is an arithmetic number, because the mean of its divisors is an integer number (2257656).

Almost surely, 2^8990789 is an apocalyptic number.

It is an amenable number.

8990789 is a deficient number, since it is larger than the sum of its proper divisors (39835).

8990789 is a wasteful number, since it uses less digits than its factorization.

8990789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39834.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 8990789 is about 2998.4644403428. The cubic root of 8990789 is about 207.9373964086.

It can be divided in two parts, 8990 and 789, that added together give a palindrome (9779).

The spelling of 8990789 in words is "eight million, nine hundred ninety thousand, seven hundred eighty-nine".