9368639 has 4 divisors (see below), whose sum is σ = 10707024. Its totient is φ = 8030256.

The previous prime is 9368633. The next prime is 9368687.

9368639 is nontrivially palindromic in base 10.

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 9368639 - 2¹² = 9364543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9368639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9368633) 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, 669182 + ... + 669195.

It is an arithmetic number, because the mean of its divisors is an integer number (2676756).

Almost surely, 2^9368639 is an apocalyptic number.

9368639 is a deficient number, since it is larger than the sum of its proper divisors (1338385).

9368639 is a wasteful number, since it uses less digits than its factorization.

9368639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338384.

The product of its digits is 209952, while the sum is 44.

The square root of 9368639 is about 3060.8232552697. The cubic root of 9368639 is about 210.8104659783.

The spelling of 9368639 in words is "nine million, three hundred sixty-eight thousand, six hundred thirty-nine".