8439946 has 8 divisors (see below), whose sum is σ = 12778560. Its totient is φ = 4180428.

The previous prime is 8439901. The next prime is 8439947. The reversal of 8439946 is 6499348.

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

It is not an unprimeable number, because it can be changed into a prime (8439947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19506 + ... + 19933.

It is an arithmetic number, because the mean of its divisors is an integer number (1597320).

Almost surely, 2^8439946 is an apocalyptic number.

8439946 is a deficient number, since it is larger than the sum of its proper divisors (4338614).

8439946 is a wasteful number, since it uses less digits than its factorization.

8439946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39548.

The product of its digits is 186624, while the sum is 43.

The square root of 8439946 is about 2905.1585154686. The cubic root of 8439946 is about 203.6009918343.

The spelling of 8439946 in words is "eight million, four hundred thirty-nine thousand, nine hundred forty-six".