9673639 has 4 divisors (see below), whose sum is σ = 10094256. Its totient is φ = 9253024.

The previous prime is 9673627. The next prime is 9673649. The reversal of 9673639 is 9363769.

It is a happy number.

9673639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9673639 - 2⁵ = 9673607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9673595 and 9673604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9673649) 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, 210274 + ... + 210319.

It is an arithmetic number, because the mean of its divisors is an integer number (2523564).

Almost surely, 2^9673639 is an apocalyptic number.

9673639 is a deficient number, since it is larger than the sum of its proper divisors (420617).

9673639 is a wasteful number, since it uses less digits than its factorization.

9673639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420616.

The product of its digits is 183708, while the sum is 43.

The square root of 9673639 is about 3110.2474178110. The cubic root of 9673639 is about 213.0737546460.

The spelling of 9673639 in words is "nine million, six hundred seventy-three thousand, six hundred thirty-nine".