9865389253 has 16 divisors (see below), whose sum is σ = 10458040320. Its totient is φ = 9292147200.

The previous prime is 9865389227. The next prime is 9865389277. The reversal of 9865389253 is 3529835689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9865389253 is a prime.

It is a super-2 number, since 2×9865389253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865389223) 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, 245013 + ... + 282421.

It is an arithmetic number, because the mean of its divisors is an integer number (653627520).

Almost surely, 2^9865389253 is an apocalyptic number.

It is an amenable number.

9865389253 is a deficient number, since it is larger than the sum of its proper divisors (592651067).

9865389253 is a wasteful number, since it uses less digits than its factorization.

9865389253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37668.

The product of its digits is 13996800, while the sum is 58.

The square root of 9865389253 is about 99324.6658841599. The cubic root of 9865389253 is about 2144.7239845305.

The spelling of 9865389253 in words is "nine billion, eight hundred sixty-five million, three hundred eighty-nine thousand, two hundred fifty-three".