9865389252 has 12 divisors (see below), whose sum is σ = 23019241616. Its totient is φ = 3288463080.

The previous prime is 9865389227. The next prime is 9865389277. The reversal of 9865389252 is 2529835689.

It is an interprime number because it is at equal distance from previous prime (9865389227) and next prime (9865389277).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 9865389192 and 9865389201.

It is an unprimeable number.

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, 411057874 + ... + 411057897.

Almost surely, 2^9865389252 is an apocalyptic number.

It is an amenable number.

9865389252 is an abundant number, since it is smaller than the sum of its proper divisors (13153852364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9865389252 is a wasteful number, since it uses less digits than its factorization.

9865389252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822115778 (or 822115776 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 57.

The square root of 9865389252 is about 99324.6658791259. The cubic root of 9865389252 is about 2144.7239844580.

The spelling of 9865389252 in words is "nine billion, eight hundred sixty-five million, three hundred eighty-nine thousand, two hundred fifty-two".