9901990110 has 32 divisors (see below), whose sum is σ = 23794210080. Its totient is φ = 2637260288.

The previous prime is 9901990097. The next prime is 9901990129. The reversal of 9901990110 is 110991099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179727 + ... + 228266.

It is an arithmetic number, because the mean of its divisors is an integer number (743569065).

Almost surely, 2^9901990110 is an apocalyptic number.

9901990110 is an abundant number, since it is smaller than the sum of its proper divisors (13892219970).

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

9901990110 is a wasteful number, since it uses less digits than its factorization.

9901990110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408812.

The product of its (nonzero) digits is 6561, while the sum is 39.

The square root of 9901990110 is about 99508.7438871580. The cubic root of 9901990110 is about 2147.3730389158.

The spelling of 9901990110 in words is "nine billion, nine hundred one million, nine hundred ninety thousand, one hundred ten".