9881814 has 16 divisors (see below), whose sum is σ = 20002752. Its totient is φ = 3254088.

The previous prime is 9881803. The next prime is 9881819. The reversal of 9881814 is 4181889.

It is a happy number.

9881814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9881819) 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, 9424 + ... + 10419.

It is an arithmetic number, because the mean of its divisors is an integer number (1250172).

Almost surely, 2^9881814 is an apocalyptic number.

9881814 is an abundant number, since it is smaller than the sum of its proper divisors (10120938).

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

9881814 is a wasteful number, since it uses less digits than its factorization.

9881814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19931.

The product of its digits is 18432, while the sum is 39.

The square root of 9881814 is about 3143.5352709967. The cubic root of 9881814 is about 214.5913564809.

The spelling of 9881814 in words is "nine million, eight hundred eighty-one thousand, eight hundred fourteen".