9421439 has 4 divisors (see below), whose sum is σ = 9599256. Its totient is φ = 9243624.

The previous prime is 9421411. The next prime is 9421441. The reversal of 9421439 is 9341249.

It is a happy number.

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

It is not a de Polignac number, because 9421439 - 2⁸ = 9421183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421459) 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, 88829 + ... + 88934.

It is an arithmetic number, because the mean of its divisors is an integer number (2399814).

Almost surely, 2^9421439 is an apocalyptic number.

9421439 is a deficient number, since it is larger than the sum of its proper divisors (177817).

9421439 is a wasteful number, since it uses less digits than its factorization.

9421439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177816.

The product of its digits is 7776, while the sum is 32.

The square root of 9421439 is about 3069.4362674602. The cubic root of 9421439 is about 211.2057545374.

The spelling of 9421439 in words is "nine million, four hundred twenty-one thousand, four hundred thirty-nine".