73489943 has 4 divisors (see below), whose sum is σ = 74375448. Its totient is φ = 72604440.

The previous prime is 73489937. The next prime is 73489957. The reversal of 73489943 is 34998437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34998437 = 19 ⋅1842023.

It is a cyclic number.

It is not a de Polignac number, because 73489943 - 2⁶ = 73489879 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 (73489243) 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, 442628 + ... + 442793.

It is an arithmetic number, because the mean of its divisors is an integer number (18593862).

Almost surely, 2^73489943 is an apocalyptic number.

73489943 is a deficient number, since it is larger than the sum of its proper divisors (885505).

73489943 is an equidigital number, since it uses as much as digits as its factorization.

73489943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885504.

The product of its digits is 653184, while the sum is 47.

The square root of 73489943 is about 8572.6275435248. The cubic root of 73489943 is about 418.8668301625.

The spelling of 73489943 in words is "seventy-three million, four hundred eighty-nine thousand, nine hundred forty-three".