9489990890 has 8 divisors (see below), whose sum is σ = 17081983620. Its totient is φ = 3795996352.

The previous prime is 9489990871. The next prime is 9489990907. The reversal of 9489990890 is 980999849.

9489990890 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8291377249 + 1198613641 = 91057^2 + 34621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474499535 + ... + 474499554.

Almost surely, 2^9489990890 is an apocalyptic number.

9489990890 is a deficient number, since it is larger than the sum of its proper divisors (7591992730).

9489990890 is a wasteful number, since it uses less digits than its factorization.

9489990890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948999096.

The product of its (nonzero) digits is 15116544, while the sum is 65.

The square root of 9489990890 is about 97416.5842657194. The cubic root of 9489990890 is about 2117.1677268196.

The spelling of 9489990890 in words is "nine billion, four hundred eighty-nine million, nine hundred ninety thousand, eight hundred ninety".