8965965809 has 4 divisors (see below), whose sum is σ = 8966651904. Its totient is φ = 8965279716.

The previous prime is 8965965791. The next prime is 8965965829. The reversal of 8965965809 is 9085695698.

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 a cyclic number.

It is not a de Polignac number, because 8965965809 - 2⁸ = 8965965553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8965965829) 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, 323057 + ... + 349710.

It is an arithmetic number, because the mean of its divisors is an integer number (2241662976).

Almost surely, 2^8965965809 is an apocalyptic number.

It is an amenable number.

8965965809 is a deficient number, since it is larger than the sum of its proper divisors (686095).

8965965809 is a wasteful number, since it uses less digits than its factorization.

8965965809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686094.

The product of its (nonzero) digits is 41990400, while the sum is 65.

The square root of 8965965809 is about 94688.7839662122. The cubic root of 8965965809 is about 2077.4585121003.

The spelling of 8965965809 in words is "eight billion, nine hundred sixty-five million, nine hundred sixty-five thousand, eight hundred nine".