9890694885 has 16 divisors (see below), whose sum is σ = 15826348800. Its totient is φ = 5274624960.

The previous prime is 9890694857. The next prime is 9890694887. The reversal of 9890694885 is 5884960989.

It is not a de Polignac number, because 9890694885 - 2¹³ = 9890686693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9890694887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340015 + ... + 367955.

It is an arithmetic number, because the mean of its divisors is an integer number (989146800).

Almost surely, 2^9890694885 is an apocalyptic number.

It is an amenable number.

9890694885 is a deficient number, since it is larger than the sum of its proper divisors (5935653915).

9890694885 is a wasteful number, since it uses less digits than its factorization.

9890694885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51548.

The product of its (nonzero) digits is 44789760, while the sum is 66.

The square root of 9890694885 is about 99451.9727556975. The cubic root of 9890694885 is about 2146.5562236489.

The spelling of 9890694885 in words is "nine billion, eight hundred ninety million, six hundred ninety-four thousand, eight hundred eighty-five".