8427939 has 16 divisors (see below), whose sum is σ = 12493824. Its totient is φ = 5018400.

The previous prime is 8427931. The next prime is 8427941. The reversal of 8427939 is 9397248.

It is not a de Polignac number, because 8427939 - 2³ = 8427931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8427939.

It is not an unprimeable number, because it can be changed into a prime (8427931) 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, 2277 + ... + 4694.

It is an arithmetic number, because the mean of its divisors is an integer number (780864).

Almost surely, 2^8427939 is an apocalyptic number.

8427939 is a deficient number, since it is larger than the sum of its proper divisors (4065885).

8427939 is a wasteful number, since it uses less digits than its factorization.

8427939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018.

The product of its digits is 108864, while the sum is 42.

The square root of 8427939 is about 2903.0912834425. The cubic root of 8427939 is about 203.5043957461.

The spelling of 8427939 in words is "eight million, four hundred twenty-seven thousand, nine hundred thirty-nine".