73489321 has 4 divisors (see below), whose sum is σ = 77357200. Its totient is φ = 69621444.

The previous prime is 73489271. The next prime is 73489327. The reversal of 73489321 is 12398437.

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: 12398437 = 59 ⋅210143.

It is a cyclic number.

It is not a de Polignac number, because 73489321 - 2²⁵ = 39934889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73489327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1933911 + ... + 1933948.

It is an arithmetic number, because the mean of its divisors is an integer number (19339300).

Almost surely, 2^73489321 is an apocalyptic number.

It is an amenable number.

73489321 is a deficient number, since it is larger than the sum of its proper divisors (3867879).

73489321 is a wasteful number, since it uses less digits than its factorization.

73489321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3867878.

The product of its digits is 36288, while the sum is 37.

The square root of 73489321 is about 8572.5912651893. The cubic root of 73489321 is about 418.8656484321.

The spelling of 73489321 in words is "seventy-three million, four hundred eighty-nine thousand, three hundred twenty-one".