9889499264 has 32 divisors (see below), whose sum is σ = 20381114700. Its totient is φ = 4774239232.

The previous prime is 9889499261. The next prime is 9889499311. The reversal of 9889499264 is 4629949889.

It can be written as a sum of positive squares in 2 ways, for example, as 9680985664 + 208513600 = 98392^2 + 14440^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 9889499194 and 9889499203.

It is not an unprimeable number, because it can be changed into a prime (9889499261) 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, 1328387 + ... + 1335810.

Almost surely, 2^9889499264 is an apocalyptic number.

It is an amenable number.

9889499264 is an abundant number, since it is smaller than the sum of its proper divisors (10491615436).

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

9889499264 is a wasteful number, since it uses less digits than its factorization.

9889499264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664240 (or 2664228 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 68.

The square root of 9889499264 is about 99445.9615268514. The cubic root of 9889499264 is about 2146.4697258126.

The spelling of 9889499264 in words is "nine billion, eight hundred eighty-nine million, four hundred ninety-nine thousand, two hundred sixty-four".