8442399 has 16 divisors (see below), whose sum is σ = 12937472. Its totient is φ = 4796928.

The previous prime is 8442389. The next prime is 8442419. The reversal of 8442399 is 9932448.

It is not a de Polignac number, because 8442399 - 2⁵ = 8442367 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 (8442349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3012 + ... + 5094.

It is an arithmetic number, because the mean of its divisors is an integer number (808592).

Almost surely, 2^8442399 is an apocalyptic number.

8442399 is a deficient number, since it is larger than the sum of its proper divisors (4495073).

8442399 is a wasteful number, since it uses less digits than its factorization.

8442399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its digits is 62208, while the sum is 39.

The square root of 8442399 is about 2905.5806648586. The cubic root of 8442399 is about 203.6207149010.

The spelling of 8442399 in words is "eight million, four hundred forty-two thousand, three hundred ninety-nine".