9989741475 has 144 divisors (see below), whose sum is σ = 22038589440. Its totient is φ = 4418971200.

The previous prime is 9989741423. The next prime is 9989741479. The reversal of 9989741475 is 5741479899.

9989741475 is a `hidden beast` number, since 9 + 98 + 9 + 74 + 1 + 475 = 666.

It is not a de Polignac number, because 9989741475 - 2⁷ = 9989741347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9989741479) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1020454 + ... + 1030196.

It is an arithmetic number, because the mean of its divisors is an integer number (153045760).

Almost surely, 2^9989741475 is an apocalyptic number.

9989741475 is an abundant number, since it is smaller than the sum of its proper divisors (12048847965).

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

9989741475 is a wasteful number, since it uses less digits than its factorization.

9989741475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9807 (or 9789 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The square root of 9989741475 is about 99948.6942135814. The cubic root of 9989741475 is about 2153.6977272317.

The spelling of 9989741475 in words is "nine billion, nine hundred eighty-nine million, seven hundred forty-one thousand, four hundred seventy-five".