9969999700 has 18 divisors (see below), whose sum is σ = 21634899566. Its totient is φ = 3987999840.

The previous prime is 9969999671. The next prime is 9969999703. The reversal of 9969999700 is 79999699.

It can be written as a sum of positive squares in 3 ways, for example, as 144432324 + 9825567376 = 12018^2 + 99124^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969999703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49849899 + ... + 49850098.

Almost surely, 2^9969999700 is an apocalyptic number.

It is an amenable number.

9969999700 is an abundant number, since it is smaller than the sum of its proper divisors (11664899866).

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

9969999700 is a wasteful number, since it uses less digits than its factorization.

9969999700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99700011 (or 99700004 counting only the distinct ones).

The product of its (nonzero) digits is 22320522, while the sum is 67.

The square root of 9969999700 is about 99849.8858286778. The cubic root of 9969999700 is about 2152.2780757217.

The spelling of 9969999700 in words is "nine billion, nine hundred sixty-nine million, nine hundred ninety-nine thousand, seven hundred".