9909199412 has 48 divisors (see below), whose sum is σ = 20183624832. Its totient is φ = 4168817280.

The previous prime is 9909199397. The next prime is 9909199441. The reversal of 9909199412 is 2149919099.

It is a super-2 number, since 2×9909199412² (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 15 ways as a sum of consecutive naturals, for example, 887738 + ... + 898830.

It is an arithmetic number, because the mean of its divisors is an integer number (420492184).

Almost surely, 2^9909199412 is an apocalyptic number.

It is an amenable number.

9909199412 is an abundant number, since it is smaller than the sum of its proper divisors (10274425420).

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

9909199412 is a wasteful number, since it uses less digits than its factorization.

9909199412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11688 (or 11686 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 53.

The square root of 9909199412 is about 99544.9617610053. The cubic root of 9909199412 is about 2147.8940555671.

The spelling of 9909199412 in words is "nine billion, nine hundred nine million, one hundred ninety-nine thousand, four hundred twelve".