9891456 has 32 divisors (see below), whose sum is σ = 26275200. Its totient is φ = 3297024.

The previous prime is 9891451. The next prime is 9891461. The reversal of 9891456 is 6541989.

It is an interprime number because it is at equal distance from previous prime (9891451) and next prime (9891461).

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (9891451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12496 + ... + 13263.

It is an arithmetic number, because the mean of its divisors is an integer number (821100).

Almost surely, 2^9891456 is an apocalyptic number.

9891456 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9891456 is an abundant number, since it is smaller than the sum of its proper divisors (16383744).

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

9891456 is a wasteful number, since it uses less digits than its factorization.

9891456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25776 (or 25764 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 9891456 is about 3145.0685207162. The cubic root of 9891456 is about 214.6611283287.

The spelling of 9891456 in words is "nine million, eight hundred ninety-one thousand, four hundred fifty-six".