9113988 has 48 divisors (see below), whose sum is σ = 23535680. Its totient is φ = 2726784.

The previous prime is 9113987. The next prime is 9113999. The reversal of 9113988 is 8893119.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (9113983) 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, 4983 + ... + 6561.

Almost surely, 2^9113988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9113988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11767840).

9113988 is an abundant number, since it is smaller than the sum of its proper divisors (14421692).

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

9113988 is a wasteful number, since it uses less digits than its factorization.

9113988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636 (or 1634 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 9113988 is about 3018.9382239456. The cubic root of 9113988 is about 208.8828659213.

It can be divided in two parts, 9113 and 988, that added together give a palindrome (10101).

The spelling of 9113988 in words is "nine million, one hundred thirteen thousand, nine hundred eighty-eight".