9889423 has 2 divisors, whose sum is σ = 9889424. Its totient is φ = 9889422.

The previous prime is 9889417. The next prime is 9889459. The reversal of 9889423 is 3249889.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3249889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9889423 - 2¹³ = 9881231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9889423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9889463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4944711 + 4944712.

It is an arithmetic number, because the mean of its divisors is an integer number (4944712).

Almost surely, 2^9889423 is an apocalyptic number.

9889423 is a deficient number, since it is larger than the sum of its proper divisors (1).

9889423 is an equidigital number, since it uses as much as digits as its factorization.

9889423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 9889423 is about 3144.7452997023. The cubic root of 9889423 is about 214.6464208216.

The spelling of 9889423 in words is "nine million, eight hundred eighty-nine thousand, four hundred twenty-three".