9996439 has 4 divisors (see below), whose sum is σ = 10038160. Its totient is φ = 9954720.

The previous prime is 9996419. The next prime is 9996457. The reversal of 9996439 is 9346999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9996439 - 2⁹ = 9995927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9996392 and 9996401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996419) 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, 20499 + ... + 20980.

It is an arithmetic number, because the mean of its divisors is an integer number (2509540).

Almost surely, 2^9996439 is an apocalyptic number.

9996439 is a deficient number, since it is larger than the sum of its proper divisors (41721).

9996439 is a wasteful number, since it uses less digits than its factorization.

9996439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720.

The product of its digits is 472392, while the sum is 49.

The square root of 9996439 is about 3161.7145664971. The cubic root of 9996439 is about 215.4178928273.

The spelling of 9996439 in words is "nine million, nine hundred ninety-six thousand, four hundred thirty-nine".