9902729132 has 12 divisors (see below), whose sum is σ = 17339253456. Its totient is φ = 4948656720.

The previous prime is 9902729131. The next prime is 9902729147. The reversal of 9902729132 is 2319272099.

It is a super-2 number, since 2×9902729132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9902729131) 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, 668723 + ... + 683370.

It is an arithmetic number, because the mean of its divisors is an integer number (1444937788).

Almost surely, 2^9902729132 is an apocalyptic number.

It is an amenable number.

9902729132 is a deficient number, since it is larger than the sum of its proper divisors (7436524324).

9902729132 is a wasteful number, since it uses less digits than its factorization.

9902729132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353928 (or 1353926 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 9902729132 is about 99512.4571699443. The cubic root of 9902729132 is about 2147.4264597071.

The spelling of 9902729132 in words is "nine billion, nine hundred two million, seven hundred twenty-nine thousand, one hundred thirty-two".