9890304945 has 32 divisors (see below), whose sum is σ = 16343645184. Its totient is φ = 5101958400.

The previous prime is 9890304937. The next prime is 9890304997. The reversal of 9890304945 is 5494030989.

It is not a de Polignac number, because 9890304945 - 2³ = 9890304937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102699 + ... + 1111631.

It is an arithmetic number, because the mean of its divisors is an integer number (510738912).

Almost surely, 2^9890304945 is an apocalyptic number.

It is an amenable number.

9890304945 is a deficient number, since it is larger than the sum of its proper divisors (6453340239).

9890304945 is a wasteful number, since it uses less digits than its factorization.

9890304945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11353.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 9890304945 is about 99450.0122926086. The cubic root of 9890304945 is about 2146.5280139985.

The spelling of 9890304945 in words is "nine billion, eight hundred ninety million, three hundred four thousand, nine hundred forty-five".