8442324639 has 24 divisors (see below), whose sum is σ = 14542474752. Its totient is φ = 4614437520.

The previous prime is 8442324629. The next prime is 8442324641. The reversal of 8442324639 is 9364232448.

8442324639 is a `hidden beast` number, since 8 + 4 + 4 + 2 + 3 + 2 + 4 + 639 = 666.

It is not a de Polignac number, because 8442324639 - 2⁴ = 8442324623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8442324594 and 8442324603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442324629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2911707 + ... + 2914604.

It is an arithmetic number, because the mean of its divisors is an integer number (605936448).

Almost surely, 2^8442324639 is an apocalyptic number.

8442324639 is a deficient number, since it is larger than the sum of its proper divisors (6100150113).

8442324639 is a wasteful number, since it uses less digits than its factorization.

8442324639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5826347 (or 5826344 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 8442324639 is about 91882.1236095466. The cubic root of 8442324639 is about 2036.2011706605.

The spelling of 8442324639 in words is "eight billion, four hundred forty-two million, three hundred twenty-four thousand, six hundred thirty-nine".