8115900789 has 4 divisors (see below), whose sum is σ = 10821201056. Its totient is φ = 5410600524.

The previous prime is 8115900743. The next prime is 8115900823. The reversal of 8115900789 is 9870095118.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8115900789 - 2¹¹ = 8115898741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115900739) 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, 1352650129 + ... + 1352650134.

It is an arithmetic number, because the mean of its divisors is an integer number (2705300264).

Almost surely, 2^8115900789 is an apocalyptic number.

It is an amenable number.

8115900789 is a deficient number, since it is larger than the sum of its proper divisors (2705300267).

8115900789 is a wasteful number, since it uses less digits than its factorization.

8115900789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705300266.

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 8115900789 is about 90088.2944060992. The cubic root of 8115900789 is about 2009.6121285677.

The spelling of 8115900789 in words is "eight billion, one hundred fifteen million, nine hundred thousand, seven hundred eighty-nine".