8947090765 has 4 divisors (see below), whose sum is σ = 10736508924. Its totient is φ = 7157672608.

The previous prime is 8947090739. The next prime is 8947090787. The reversal of 8947090765 is 5670907498.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6425946244 + 2521144521 = 80162^2 + 50211^2 .

It is a cyclic number.

It is not a de Polignac number, because 8947090765 - 2¹⁵ = 8947057997 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894709072 + ... + 894709081.

It is an arithmetic number, because the mean of its divisors is an integer number (2684127231).

Almost surely, 2^8947090765 is an apocalyptic number.

It is an amenable number.

8947090765 is a deficient number, since it is larger than the sum of its proper divisors (1789418159).

8947090765 is a wasteful number, since it uses less digits than its factorization.

8947090765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789418158.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 8947090765 is about 94589.0626076821. The cubic root of 8947090765 is about 2075.9996743063. Note that the first 3 decimals are identical.

The spelling of 8947090765 in words is "eight billion, nine hundred forty-seven million, ninety thousand, seven hundred sixty-five".