73290809 has 8 divisors (see below), whose sum is σ = 77492640. Its totient is φ = 69123456.

The previous prime is 73290799. The next prime is 73290817. The reversal of 73290809 is 90809237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73290809 - 2¹² = 73286713 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (73290839) 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 7 ways as a sum of consecutive naturals, for example, 4184 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (9686580).

Almost surely, 2^73290809 is an apocalyptic number.

It is an amenable number.

73290809 is a deficient number, since it is larger than the sum of its proper divisors (4201831).

73290809 is a wasteful number, since it uses less digits than its factorization.

73290809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17239.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 73290809 is about 8561.0051395850. The cubic root of 73290809 is about 418.4881566725.

The spelling of 73290809 in words is "seventy-three million, two hundred ninety thousand, eight hundred nine".