8442715 has 4 divisors (see below), whose sum is σ = 10131264. Its totient is φ = 6754168.

The previous prime is 8442713. The next prime is 8442767. The reversal of 8442715 is 5172448.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8442715 - 2¹ = 8442713 is a prime.

It is a Duffinian number.

8442715 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8442713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844267 + ... + 844276.

It is an arithmetic number, because the mean of its divisors is an integer number (2532816).

Almost surely, 2^8442715 is an apocalyptic number.

8442715 is a deficient number, since it is larger than the sum of its proper divisors (1688549).

8442715 is a wasteful number, since it uses less digits than its factorization.

8442715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688548.

The product of its digits is 8960, while the sum is 31.

The square root of 8442715 is about 2905.6350424649. The cubic root of 8442715 is about 203.6232553852.

The spelling of 8442715 in words is "eight million, four hundred forty-two thousand, seven hundred fifteen".