8389242 has 12 divisors (see below), whose sum is σ = 18176730. Its totient is φ = 2796408.

The previous prime is 8389237. The next prime is 8389261. The reversal of 8389242 is 2429838.

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 1212201 = 2679^2 + 1101^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 8 + 3⁴ + 8 + 9 + 2⁹ + 4² + 2²³ .

It is a junction number, because it is equal to n+sod(n) for n = 8389197 and 8389206.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 233017 + ... + 233052.

Almost surely, 2^8389242 is an apocalyptic number.

8389242 is an abundant number, since it is smaller than the sum of its proper divisors (9787488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8389242 is a wasteful number, since it uses less digits than its factorization.

8389242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466077 (or 466074 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8389242 is about 2896.4188233058. The cubic root of 8389242 is about 203.1924534005.

The spelling of 8389242 in words is "eight million, three hundred eighty-nine thousand, two hundred forty-two".