8442999 has 24 divisors (see below), whose sum is σ = 13038480. Its totient is φ = 5246208.

The previous prime is 8442997. The next prime is 8443037. The reversal of 8442999 is 9992448.

It is not a de Polignac number, because 8442999 - 2¹ = 8442997 is a prime.

It is a super-2 number, since 2×8442999² = 142568464228002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21069 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (543270).

Almost surely, 2^8442999 is an apocalyptic number.

8442999 is a deficient number, since it is larger than the sum of its proper divisors (4595481).

8442999 is a wasteful number, since it uses less digits than its factorization.

8442999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 556 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 8442999 is about 2905.6839126099. The cubic root of 8442999 is about 203.6255385511.

The spelling of 8442999 in words is "eight million, four hundred forty-two thousand, nine hundred ninety-nine".