9113989 has 8 divisors (see below), whose sum is σ = 9690840. Its totient is φ = 8541696.

The previous prime is 9113987. The next prime is 9113999. The reversal of 9113989 is 9893119.

It can be written as a sum of positive squares in 4 ways, for example, as 1368900 + 7745089 = 1170^2 + 2783^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9113989 - 2¹ = 9113987 is a prime.

It is a Duffinian number.

9113989 is a lucky number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3577 + ... + 5569.

It is an arithmetic number, because the mean of its divisors is an integer number (1211355).

Almost surely, 2^9113989 is an apocalyptic number.

It is an amenable number.

9113989 is a deficient number, since it is larger than the sum of its proper divisors (576851).

9113989 is a wasteful number, since it uses less digits than its factorization.

9113989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279.

The product of its digits is 17496, while the sum is 40.

The square root of 9113989 is about 3018.9383895668. The cubic root of 9113989 is about 208.8828735609.

It can be divided in two parts, 911 and 3989, that added together give a square (4900 = 70²).

The spelling of 9113989 in words is "nine million, one hundred thirteen thousand, nine hundred eighty-nine".