8738321 has 4 divisors (see below), whose sum is σ = 9118272. Its totient is φ = 8358372.

The previous prime is 8738299. The next prime is 8738333. The reversal of 8738321 is 1238378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1238378 = 2 ⋅619189.

It is a cyclic number.

It is not a de Polignac number, because 8738321 - 2¹⁸ = 8476177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8738351) 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, 189941 + ... + 189986.

It is an arithmetic number, because the mean of its divisors is an integer number (2279568).

Almost surely, 2^8738321 is an apocalyptic number.

It is an amenable number.

8738321 is a deficient number, since it is larger than the sum of its proper divisors (379951).

8738321 is a wasteful number, since it uses less digits than its factorization.

8738321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379950.

The product of its digits is 8064, while the sum is 32.

The square root of 8738321 is about 2956.0651210689. The cubic root of 8738321 is about 205.9725432347.

The spelling of 8738321 in words is "eight million, seven hundred thirty-eight thousand, three hundred twenty-one".