9887444 has 12 divisors (see below), whose sum is σ = 19774944. Its totient is φ = 4237464.

The previous prime is 9887441. The next prime is 9887503. The reversal of 9887444 is 4447889.

9887444 is an admirable number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9887395 and 9887404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176534 + ... + 176589.

It is an arithmetic number, because the mean of its divisors is an integer number (1647912).

Almost surely, 2^9887444 is an apocalyptic number.

It is an amenable number.

9887444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9887444 is a wasteful number, since it uses less digits than its factorization.

9887444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353134 (or 353132 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 9887444 is about 3144.4306320859. The cubic root of 9887444 is about 214.6321020353.

The spelling of 9887444 in words is "nine million, eight hundred eighty-seven thousand, four hundred forty-four".