9897390 has 48 divisors (see below), whose sum is σ = 26692848. Its totient is φ = 2638656.

The previous prime is 9897367. The next prime is 9897397. The reversal of 9897390 is 937989.

It is a happy number.

9897390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9897397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394 + ... + 4466.

It is an arithmetic number, because the mean of its divisors is an integer number (556101).

Almost surely, 2^9897390 is an apocalyptic number.

9897390 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9897390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13346424).

9897390 is an abundant number, since it is smaller than the sum of its proper divisors (16795458).

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

9897390 is a wasteful number, since it uses less digits than its factorization.

9897390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9897390 is about 3146.0117609443. The cubic root of 9897390 is about 214.7040456537.

The spelling of 9897390 in words is "nine million, eight hundred ninety-seven thousand, three hundred ninety".