9909909910 has 32 divisors (see below), whose sum is σ = 17896723200. Its totient is φ = 3950904672.

The previous prime is 9909909907. The next prime is 9909909913. The reversal of 9909909910 is 199099099.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9909909907) and next prime (9909909913).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909909913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5671657 + ... + 5673403.

It is an arithmetic number, because the mean of its divisors is an integer number (559272600).

Almost surely, 2^9909909910 is an apocalyptic number.

9909909910 is a deficient number, since it is larger than the sum of its proper divisors (7986813290).

9909909910 is a wasteful number, since it uses less digits than its factorization.

9909909910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300.

The product of its (nonzero) digits is 531441, while the sum is 55.

The square root of 9909909910 is about 99548.5304261193. The cubic root of 9909909910 is about 2147.9453896153.

The spelling of 9909909910 in words is "nine billion, nine hundred nine million, nine hundred nine thousand, nine hundred ten".