9894786490 has 32 divisors (see below), whose sum is σ = 18084332160. Its totient is φ = 3897230400.

The previous prime is 9894786469. The next prime is 9894786493. The reversal of 9894786490 is 946874989.

It is not an unprimeable number, because it can be changed into a prime (9894786493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580185 + ... + 596995.

It is an arithmetic number, because the mean of its divisors is an integer number (565135380).

Almost surely, 2^9894786490 is an apocalyptic number.

9894786490 is a deficient number, since it is larger than the sum of its proper divisors (8189545670).

9894786490 is a wasteful number, since it uses less digits than its factorization.

9894786490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17718.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The square root of 9894786490 is about 99472.5413870582. The cubic root of 9894786490 is about 2146.8521802509.

The spelling of 9894786490 in words is "nine billion, eight hundred ninety-four million, seven hundred eighty-six thousand, four hundred ninety".