9999970000 has 100 divisors (see below), whose sum is σ = 24261262036. Its totient is φ = 3991680000.

The previous prime is 9999969949. The next prime is 9999970007. The reversal of 9999970000 is 799999.

It can be written as a sum of positive squares in 10 ways, for example, as 4696635024 + 5303334976 = 68532^2 + 72824^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999970000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999970007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7569340 + ... + 7570660.

Almost surely, 2^9999970000 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 9999970000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12130631018).

9999970000 is an abundant number, since it is smaller than the sum of its proper divisors (14261292036).

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

9999970000 is a wasteful number, since it uses less digits than its factorization.

9999970000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106 (or 2085 counting only the distinct ones).

The product of its (nonzero) digits is 413343, while the sum is 52.

The square root of 9999970000 is about 99999.8499998875. The cubic root of 9999970000 is about 2154.4325355950.

The spelling of 9999970000 in words is "nine billion, nine hundred ninety-nine million, nine hundred seventy thousand".