9891396 has 30 divisors (see below), whose sum is σ = 25858910. Its totient is φ = 3297024.

The previous prime is 9891391. The next prime is 9891439. The reversal of 9891396 is 6931989.

9891396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5225796 + 4665600 = 2286^2 + 2160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891391) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14941 + ... + 15588.

Almost surely, 2^9891396 is an apocalyptic number.

It is an amenable number.

9891396 is an abundant number, since it is smaller than the sum of its proper divisors (15967514).

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

9891396 is a wasteful number, since it uses less digits than its factorization.

9891396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30545 (or 30534 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9891396 is about 3145.0589819588. The cubic root of 9891396 is about 214.6606942944.

The spelling of 9891396 in words is "nine million, eight hundred ninety-one thousand, three hundred ninety-six".