73340809 has 2 divisors, whose sum is σ = 73340810. Its totient is φ = 73340808.

The previous prime is 73340783. The next prime is 73340819. The reversal of 73340809 is 90804337.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67289209 + 6051600 = 8203^2 + 2460^2 .

It is a cyclic number.

It is not a de Polignac number, because 73340809 - 2⁵ = 73340777 is a prime.

It is not a weakly prime, because it can be changed into another prime (73340819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36670404 + 36670405.

It is an arithmetic number, because the mean of its divisors is an integer number (36670405).

Almost surely, 2^73340809 is an apocalyptic number.

It is an amenable number.

73340809 is a deficient number, since it is larger than the sum of its proper divisors (1).

73340809 is an equidigital number, since it uses as much as digits as its factorization.

73340809 is an evil number, because the sum of its binary digits is even.

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

The square root of 73340809 is about 8563.9248595489. The cubic root of 73340809 is about 418.5833011688.

The spelling of 73340809 in words is "seventy-three million, three hundred forty thousand, eight hundred nine".