8942636443 has 4 divisors (see below), whose sum is σ = 9630531568. Its totient is φ = 8254741320.

The previous prime is 8942636441. The next prime is 8942636447. The reversal of 8942636443 is 3446362498.

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 8942636443 - 2¹ = 8942636441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8942636441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343947543 + ... + 343947568.

It is an arithmetic number, because the mean of its divisors is an integer number (2407632892).

Almost surely, 2^8942636443 is an apocalyptic number.

8942636443 is a deficient number, since it is larger than the sum of its proper divisors (687895125).

8942636443 is a wasteful number, since it uses less digits than its factorization.

8942636443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687895124.

The product of its digits is 2985984, while the sum is 49.

The square root of 8942636443 is about 94565.5140259915. The cubic root of 8942636443 is about 2075.6551039776.

The spelling of 8942636443 in words is "eight billion, nine hundred forty-two million, six hundred thirty-six thousand, four hundred forty-three".