9481990 has 48 divisors (see below), whose sum is σ = 20429712. Its totient is φ = 3157056.

The previous prime is 9481963. The next prime is 9481991. The reversal of 9481990 is 991849.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9481991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17869 + ... + 18391.

It is an arithmetic number, because the mean of its divisors is an integer number (425619).

Almost surely, 2^9481990 is an apocalyptic number.

9481990 is an abundant number, since it is smaller than the sum of its proper divisors (10947722).

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

9481990 is a wasteful number, since it uses less digits than its factorization.

9481990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 9481990 is about 3079.2840076875. The cubic root of 9481990 is about 211.6572573851.

The spelling of 9481990 in words is "nine million, four hundred eighty-one thousand, nine hundred ninety".