8998999 has 8 divisors (see below), whose sum is σ = 9167760. Its totient is φ = 8832000.

The previous prime is 8998991. The next prime is 8999009. The reversal of 8998999 is 9998998.

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

It is a cyclic number.

It is not a de Polignac number, because 8998999 - 2³ = 8998991 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 (8998991) 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, 13719 + ... + 14359.

It is an arithmetic number, because the mean of its divisors is an integer number (1145970).

Almost surely, 2^8998999 is an apocalyptic number.

8998999 is a deficient number, since it is larger than the sum of its proper divisors (168761).

8998999 is a wasteful number, since it uses less digits than its factorization.

8998999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its digits is 3779136, while the sum is 61.

The square root of 8998999 is about 2999.8331620275. The cubic root of 8998999 is about 208.0006703011. Note that the first 3 decimals are identical.

Subtracting 8998999 from its reverse (9998998), we obtain a palindrome (999999).

The spelling of 8998999 in words is "eight million, nine hundred ninety-eight thousand, nine hundred ninety-nine".