73499909 has 8 divisors (see below), whose sum is σ = 84353280. Its totient is φ = 62734896.

The previous prime is 73499887. The next prime is 73499947. The reversal of 73499909 is 90999437.

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

It is a de Polignac number, because none of the positive numbers 2^k-73499909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73499989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20294 + ... + 23639.

It is an arithmetic number, because the mean of its divisors is an integer number (10544160).

Almost surely, 2^73499909 is an apocalyptic number.

It is an amenable number.

73499909 is a deficient number, since it is larger than the sum of its proper divisors (10853371).

73499909 is a wasteful number, since it uses less digits than its factorization.

73499909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44179.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 73499909 is about 8573.2087925117. The cubic root of 73499909 is about 418.8857635384.

The spelling of 73499909 in words is "seventy-three million, four hundred ninety-nine thousand, nine hundred nine".