9319421 has 4 divisors (see below), whose sum is σ = 9326844. Its totient is φ = 9312000.

The previous prime is 9319403. The next prime is 9319447. The reversal of 9319421 is 1249139.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8916196 + 403225 = 2986^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 9319421 - 2⁶ = 9319357 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 (9319021) 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, 1310 + ... + 4511.

It is an arithmetic number, because the mean of its divisors is an integer number (2331711).

Almost surely, 2^9319421 is an apocalyptic number.

It is an amenable number.

9319421 is a deficient number, since it is larger than the sum of its proper divisors (7423).

9319421 is a wasteful number, since it uses less digits than its factorization.

9319421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7422.

The product of its digits is 1944, while the sum is 29.

The square root of 9319421 is about 3052.7726741439. The cubic root of 9319421 is about 210.4406544470.

The spelling of 9319421 in words is "nine million, three hundred nineteen thousand, four hundred twenty-one".