8446142686 has 4 divisors (see below), whose sum is σ = 12669214032. Its totient is φ = 4223071342.

The previous prime is 8446142647. The next prime is 8446142701. The reversal of 8446142686 is 6862416448.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111535670 + ... + 2111535673.

It is an arithmetic number, because the mean of its divisors is an integer number (3167303508).

Almost surely, 2^8446142686 is an apocalyptic number.

8446142686 is a deficient number, since it is larger than the sum of its proper divisors (4223071346).

8446142686 is a wasteful number, since it uses less digits than its factorization.

8446142686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223071345.

The product of its digits is 1769472, while the sum is 49.

The square root of 8446142686 is about 91902.8981371099. The cubic root of 8446142686 is about 2036.5080821815.

The spelling of 8446142686 in words is "eight billion, four hundred forty-six million, one hundred forty-two thousand, six hundred eighty-six".