9901129530 has 32 divisors (see below), whose sum is σ = 23776835904. Its totient is φ = 2638731776.

The previous prime is 9901129507. The next prime is 9901129531. The reversal of 9901129530 is 359211099.

It is not an unprimeable number, because it can be changed into a prime (9901129531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46332 + ... + 148151.

It is an arithmetic number, because the mean of its divisors is an integer number (743026122).

Almost surely, 2^9901129530 is an apocalyptic number.

9901129530 is an abundant number, since it is smaller than the sum of its proper divisors (13875706374).

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

9901129530 is a wasteful number, since it uses less digits than its factorization.

9901129530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196190.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 9901129530 is about 99504.4196505864. The cubic root of 9901129530 is about 2147.3108278583.

The spelling of 9901129530 in words is "nine billion, nine hundred one million, one hundred twenty-nine thousand, five hundred thirty".