9689889792 has 88 divisors (see below), whose sum is σ = 28175104512. Its totient is φ = 2936320000.

The previous prime is 9689889779. The next prime is 9689889793. The reversal of 9689889792 is 2979889869.

It is a tau number, because it is divible by the number of its divisors (88).

It is a super-2 number, since 2×9689889792² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9689889793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109584 + ... + 177167.

Almost surely, 2^9689889792 is an apocalyptic number.

It is an amenable number.

9689889792 is an abundant number, since it is smaller than the sum of its proper divisors (18485214720).

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

9689889792 is a wasteful number, since it uses less digits than its factorization.

9689889792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286785 (or 286767 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 75.

The square root of 9689889792 is about 98437.2378320318. The cubic root of 9689889792 is about 2131.9300243264.

The spelling of 9689889792 in words is "nine billion, six hundred eighty-nine million, eight hundred eighty-nine thousand, seven hundred ninety-two".