8442663826 has 8 divisors (see below), whose sum is σ = 12664410444. Its totient is φ = 4221193680.

The previous prime is 8442663793. The next prime is 8442663833. The reversal of 8442663826 is 6283662448.

It can be written as a sum of positive squares in 2 ways, for example, as 6585484801 + 1857179025 = 81151^2 + 43095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8442663826.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44736 + ... + 137428.

Almost surely, 2^8442663826 is an apocalyptic number.

8442663826 is a deficient number, since it is larger than the sum of its proper divisors (4221746618).

8442663826 is a wasteful number, since it uses less digits than its factorization.

8442663826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138236.

The product of its digits is 2654208, while the sum is 49.

The square root of 8442663826 is about 91883.9693635402. The cubic root of 8442663826 is about 2036.2284397579.

The spelling of 8442663826 in words is "eight billion, four hundred forty-two million, six hundred sixty-three thousand, eight hundred twenty-six".