909990099909 has 48 divisors (see below), whose sum is σ = 1467471582720. Its totient is φ = 538609669920.

The previous prime is 909990099883. The next prime is 909990099947.

909990099909 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 909990099909 - 2¹² = 909990095813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909990099959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61800022 + ... + 61814744.

It is an arithmetic number, because the mean of its divisors is an integer number (30572324640).

Almost surely, 2^909990099909 is an apocalyptic number.

909990099909 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

909990099909 is a deficient number, since it is larger than the sum of its proper divisors (557481482811).

909990099909 is a wasteful number, since it uses less digits than its factorization.

909990099909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29302 (or 29299 counting only the distinct ones).

The product of its (nonzero) digits is 43046721, while the sum is 72.

The spelling of 909990099909 in words is "nine hundred nine billion, nine hundred ninety million, ninety-nine thousand, nine hundred nine".