8120433789 has 128 divisors (see below), whose sum is σ = 13753958400. Its totient is φ = 4761291456.

The previous prime is 8120433773. The next prime is 8120433823. The reversal of 8120433789 is 9873340218.

It is not a de Polignac number, because 8120433789 - 2⁴ = 8120433773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120433749) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 78839112 + ... + 78839214.

It is an arithmetic number, because the mean of its divisors is an integer number (107452800).

Almost surely, 2^8120433789 is an apocalyptic number.

It is an amenable number.

8120433789 is a deficient number, since it is larger than the sum of its proper divisors (5633524611).

8120433789 is a wasteful number, since it uses less digits than its factorization.

8120433789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 8120433789 is about 90113.4495455590. The cubic root of 8120433789 is about 2009.9862039597.

The spelling of 8120433789 in words is "eight billion, one hundred twenty million, four hundred thirty-three thousand, seven hundred eighty-nine".