8820999 has 12 divisors (see below), whose sum is σ = 13899912. Its totient is φ = 5346000.

The previous prime is 8820971. The next prime is 8821003. The reversal of 8820999 is 9990288.

It is not a de Polignac number, because 8820999 - 2⁸ = 8820743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8820919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44452 + ... + 44649.

It is an arithmetic number, because the mean of its divisors is an integer number (1158326).

Almost surely, 2^8820999 is an apocalyptic number.

8820999 is a deficient number, since it is larger than the sum of its proper divisors (5078913).

8820999 is a wasteful number, since it uses less digits than its factorization.

8820999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89118 (or 89115 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 8820999 is about 2970.0166666199. The cubic root of 8820999 is about 206.6201112037.

The spelling of 8820999 in words is "eight million, eight hundred twenty thousand, nine hundred ninety-nine".