73034809 has 4 divisors (see below), whose sum is σ = 73338100. Its totient is φ = 72731520.

The previous prime is 73034783. The next prime is 73034831. The reversal of 73034809 is 90843037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90843037 = 179 ⋅507503.

It can be written as a sum of positive squares in 2 ways, for example, as 58859584 + 14175225 = 7672^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 73034809 - 2⁷ = 73034681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73034869) 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, 151284 + ... + 151765.

It is an arithmetic number, because the mean of its divisors is an integer number (18334525).

Almost surely, 2^73034809 is an apocalyptic number.

It is an amenable number.

73034809 is a deficient number, since it is larger than the sum of its proper divisors (303291).

73034809 is a wasteful number, since it uses less digits than its factorization.

73034809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303290.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 73034809 is about 8546.0405451882. The cubic root of 73034809 is about 418.0003376751. Note that the first 3 decimals are identical.

The spelling of 73034809 in words is "seventy-three million, thirty-four thousand, eight hundred nine".