9865389201 has 4 divisors (see below), whose sum is σ = 13153852272. Its totient is φ = 6576926132.

The previous prime is 9865389179. The next prime is 9865389211. The reversal of 9865389201 is 1029835689.

It is a happy number.

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 9865389201 - 2⁵ = 9865389169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9865389211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644231531 + ... + 1644231536.

It is an arithmetic number, because the mean of its divisors is an integer number (3288463068).

Almost surely, 2^9865389201 is an apocalyptic number.

It is an amenable number.

9865389201 is a deficient number, since it is larger than the sum of its proper divisors (3288463071).

9865389201 is a wasteful number, since it uses less digits than its factorization.

9865389201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288463070.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 9865389201 is about 99324.6656223921. The cubic root of 9865389201 is about 2144.7239807623.

The spelling of 9865389201 in words is "nine billion, eight hundred sixty-five million, three hundred eighty-nine thousand, two hundred one".