965505009 has 16 divisors (see below), whose sum is σ = 1473554432. Its totient is φ = 550851408.

The previous prime is 965504999. The next prime is 965505049. The reversal of 965505009 is 900505569.

It is not a de Polignac number, because 965505009 - 2⁴ = 965504993 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (965505049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22249 + ... + 49254.

It is an arithmetic number, because the mean of its divisors is an integer number (92097152).

Almost surely, 2^965505009 is an apocalyptic number.

It is an amenable number.

965505009 is a deficient number, since it is larger than the sum of its proper divisors (508049423).

965505009 is a wasteful number, since it uses less digits than its factorization.

965505009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72156.

The product of its (nonzero) digits is 60750, while the sum is 39.

The square root of 965505009 is about 31072.5764783032. The cubic root of 965505009 is about 988.3668645975.

The spelling of 965505009 in words is "nine hundred sixty-five million, five hundred five thousand, nine".