8389142 has 16 divisors (see below), whose sum is σ = 12891312. Its totient is φ = 4093440.

The previous prime is 8389141. The next prime is 8389153. The reversal of 8389142 is 2419838.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8389141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15842 + ... + 16362.

It is an arithmetic number, because the mean of its divisors is an integer number (805707).

Almost surely, 2^8389142 is an apocalyptic number.

8389142 is a deficient number, since it is larger than the sum of its proper divisors (4502170).

8389142 is a wasteful number, since it uses less digits than its factorization.

8389142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its digits is 13824, while the sum is 35.

The square root of 8389142 is about 2896.4015605575. The cubic root of 8389142 is about 203.1916460440.

The spelling of 8389142 in words is "eight million, three hundred eighty-nine thousand, one hundred forty-two".