9919909910 has 16 divisors (see below), whose sum is σ = 17857180512. Its totient is φ = 3967665600.

The previous prime is 9919909907. The next prime is 9919909927. The reversal of 9919909910 is 199099199.

It is a super-2 number, since 2×9919909910² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144575 + ... + 201845.

It is an arithmetic number, because the mean of its divisors is an integer number (1116073782).

Almost surely, 2^9919909910 is an apocalyptic number.

9919909910 is a deficient number, since it is larger than the sum of its proper divisors (7937270602).

9919909910 is a wasteful number, since it uses less digits than its factorization.

9919909910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74599.

The product of its (nonzero) digits is 531441, while the sum is 56.

The square root of 9919909910 is about 99598.7445201997. The cubic root of 9919909910 is about 2148.6676374538.

It can be divided in two parts, 9 and 919909910, that added together give a palindrome (919909919).

The spelling of 9919909910 in words is "nine billion, nine hundred nineteen million, nine hundred nine thousand, nine hundred ten".