9113840 has 40 divisors (see below), whose sum is σ = 21769440. Its totient is φ = 3545856.

The previous prime is 9113837. The next prime is 9113843. The reversal of 9113840 is 483119.

It is an interprime number because it is at equal distance from previous prime (9113837) and next prime (9113843).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9113843) 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, 1421 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (544236).

Almost surely, 2^9113840 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 9113840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10884720).

9113840 is an abundant number, since it is smaller than the sum of its proper divisors (12655600).

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

9113840 is a wasteful number, since it uses less digits than its factorization.

9113840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3123 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 9113840 is about 3018.9137119169. The cubic root of 9113840 is about 208.8817352479.

Adding to 9113840 its reverse (483119), we get a palindrome (9596959).

It can be divided in two parts, 91 and 13840, that added together give a palindrome (13931).

The spelling of 9113840 in words is "nine million, one hundred thirteen thousand, eight hundred forty".