9889447 has 4 divisors (see below), whose sum is σ = 9896040. Its totient is φ = 9882856.

The previous prime is 9889423. The next prime is 9889459. The reversal of 9889447 is 7449889.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7449889 = 31 ⋅240319.

It is a cyclic number.

It is not a de Polignac number, because 9889447 - 2²³ = 1500839 is a prime.

It is a Duffinian number.

9889447 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9889447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9889417) 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, 168 + ... + 4450.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^9889447 is an apocalyptic number.

9889447 is a deficient number, since it is larger than the sum of its proper divisors (6593).

9889447 is a wasteful number, since it uses less digits than its factorization.

9889447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6592.

The product of its digits is 580608, while the sum is 49.

The square root of 9889447 is about 3144.7491155894. The cubic root of 9889447 is about 214.6465944587.

The spelling of 9889447 in words is "nine million, eight hundred eighty-nine thousand, four hundred forty-seven".