9901622088 has 84 divisors (see below), whose sum is σ = 27856957635. Its totient is φ = 3298007664.

The previous prime is 9901622063. The next prime is 9901622089. The reversal of 9901622088 is 8802261099.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 4950811044 + 4950811044 = 70362^2 + 70362^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=70362.

It is not an unprimeable number, because it can be changed into a prime (9901622089) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 7598445 + ... + 7599747.

Almost surely, 2^9901622088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9901622088

9901622088 is an abundant number, since it is smaller than the sum of its proper divisors (17955335547).

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

9901622088 is an frugal number, since it uses more digits than its factorization.

9901622088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 9901622088 is about 99506.8946756957. The cubic root of 9901622088 is about 2147.3464351623.

It can be divided in two parts, 99016 and 22088, that added together give a square (121104 = 348²).

The spelling of 9901622088 in words is "nine billion, nine hundred one million, six hundred twenty-two thousand, eighty-eight".