9989769522 has 16 divisors (see below), whose sum is σ = 20007029952. Its totient is φ = 3325341360.

The previous prime is 9989769497. The next prime is 9989769523. The reversal of 9989769522 is 2259679899.

It is not an unprimeable number, because it can be changed into a prime (9989769523) 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, 1140729 + ... + 1149452.

It is an arithmetic number, because the mean of its divisors is an integer number (1250439372).

Almost surely, 2^9989769522 is an apocalyptic number.

9989769522 is an abundant number, since it is smaller than the sum of its proper divisors (10017260430).

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

9989769522 is a wasteful number, since it uses less digits than its factorization.

9989769522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290913.

The product of its digits is 44089920, while the sum is 66.

The square root of 9989769522 is about 99948.8345204685. The cubic root of 9989769522 is about 2153.6997427895.

The spelling of 9989769522 in words is "nine billion, nine hundred eighty-nine million, seven hundred sixty-nine thousand, five hundred twenty-two".