9907905144 has 128 divisors (see below), whose sum is σ = 25590277440. Its totient is φ = 3195666432.

The previous prime is 9907905131. The next prime is 9907905173. The reversal of 9907905144 is 4415097099.

It is a junction number, because it is equal to n+sod(n) for n = 9907905093 and 9907905102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29400144 + ... + 29400480.

Almost surely, 2^9907905144 is an apocalyptic number.

It is an amenable number.

9907905144 is an abundant number, since it is smaller than the sum of its proper divisors (15682372296).

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

9907905144 is a wasteful number, since it uses less digits than its factorization.

9907905144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 9907905144 is about 99538.4606270360. The cubic root of 9907905144 is about 2147.8005373635.

The spelling of 9907905144 in words is "nine billion, nine hundred seven million, nine hundred five thousand, one hundred forty-four".