73484809 has 4 divisors (see below), whose sum is σ = 74689540. Its totient is φ = 72280080.

The previous prime is 73484771. The next prime is 73484819. The reversal of 73484809 is 90848437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90848437 = 1861 ⋅48817.

It can be written as a sum of positive squares in 2 ways, for example, as 2166784 + 71318025 = 1472^2 + 8445^2 .

It is a cyclic number.

It is not a de Polignac number, because 73484809 - 2⁷ = 73484681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73484819) 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, 602274 + ... + 602395.

It is an arithmetic number, because the mean of its divisors is an integer number (18672385).

Almost surely, 2^73484809 is an apocalyptic number.

It is an amenable number.

73484809 is a deficient number, since it is larger than the sum of its proper divisors (1204731).

73484809 is a wasteful number, since it uses less digits than its factorization.

73484809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204730.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 73484809 is about 8572.3280968474. The cubic root of 73484809 is about 418.8570759372.

The spelling of 73484809 in words is "seventy-three million, four hundred eighty-four thousand, eight hundred nine".