9990140 has 12 divisors (see below), whose sum is σ = 20979336. Its totient is φ = 3996048.

The previous prime is 9990137. The next prime is 9990163. The reversal of 9990140 is 410999.

It is a junction number, because it is equal to n+sod(n) for n = 9990097 and 9990106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249734 + ... + 249773.

It is an arithmetic number, because the mean of its divisors is an integer number (1748278).

Almost surely, 2^9990140 is an apocalyptic number.

It is an amenable number.

9990140 is an abundant number, since it is smaller than the sum of its proper divisors (10989196).

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

9990140 is a wasteful number, since it uses less digits than its factorization.

9990140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499516 (or 499514 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 9990140 is about 3160.7182727981. The cubic root of 9990140 is about 215.3726366310.

The spelling of 9990140 in words is "nine million, nine hundred ninety thousand, one hundred forty".