9990389466 has 48 divisors (see below), whose sum is σ = 22135171968. Its totient is φ = 3255033600.

The previous prime is 9990389459. The next prime is 9990389467. The reversal of 9990389466 is 6649830999.

9990389466 is a `hidden beast` number, since 9 + 9 + 90 + 3 + 89 + 466 = 666.

It is not an unprimeable number, because it can be changed into a prime (9990389467) 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, 678826 + ... + 693386.

It is an arithmetic number, because the mean of its divisors is an integer number (461149416).

Almost surely, 2^9990389466 is an apocalyptic number.

9990389466 is an abundant number, since it is smaller than the sum of its proper divisors (12144782502).

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

9990389466 is a wasteful number, since it uses less digits than its factorization.

9990389466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15427 (or 15424 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The square root of 9990389466 is about 99951.9357791534. The cubic root of 9990389466 is about 2153.7442932206.

The spelling of 9990389466 in words is "nine billion, nine hundred ninety million, three hundred eighty-nine thousand, four hundred sixty-six".