9990105240 has 32 divisors (see below), whose sum is σ = 29970316080. Its totient is φ = 2664028032.

The previous prime is 9990105211. The next prime is 9990105241. The reversal of 9990105240 is 425010999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990105241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41625319 + ... + 41625558.

Almost surely, 2^9990105240 is an apocalyptic number.

It is an amenable number.

9990105240 is an abundant number, since it is smaller than the sum of its proper divisors (19980210840).

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

9990105240 is a wasteful number, since it uses less digits than its factorization.

9990105240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83250891 (or 83250887 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 9990105240 is about 99950.5139556571. The cubic root of 9990105240 is about 2153.7238683935.

The spelling of 9990105240 in words is "nine billion, nine hundred ninety million, one hundred five thousand, two hundred forty".