9894725420 has 12 divisors (see below), whose sum is σ = 20778923424. Its totient is φ = 3957890160.

The previous prime is 9894725417. The next prime is 9894725429. The reversal of 9894725420 is 245274989.

It is a super-2 number, since 2×9894725420² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9894725429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247368116 + ... + 247368155.

It is an arithmetic number, because the mean of its divisors is an integer number (1731576952).

Almost surely, 2^9894725420 is an apocalyptic number.

It is an amenable number.

9894725420 is an abundant number, since it is smaller than the sum of its proper divisors (10884198004).

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

9894725420 is a wasteful number, since it uses less digits than its factorization.

9894725420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494736280 (or 494736278 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 9894725420 is about 99472.2344174494. The cubic root of 9894725420 is about 2146.8477634963.

The spelling of 9894725420 in words is "nine billion, eight hundred ninety-four million, seven hundred twenty-five thousand, four hundred twenty".