73934909 has 8 divisors (see below), whose sum is σ = 77922240. Its totient is φ = 69957216.

The previous prime is 73934899. The next prime is 73934923. The reversal of 73934909 is 90943937.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73934909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73934909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73934999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17744 + ... + 21510.

It is an arithmetic number, because the mean of its divisors is an integer number (9740280).

Almost surely, 2^73934909 is an apocalyptic number.

It is an amenable number.

73934909 is a deficient number, since it is larger than the sum of its proper divisors (3987331).

73934909 is a wasteful number, since it uses less digits than its factorization.

73934909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4819.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 73934909 is about 8598.5410971862. The cubic root of 73934909 is about 419.7105129115.

Subtracting 73934909 from its reverse (90943937), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 73934909 in words is "seventy-three million, nine hundred thirty-four thousand, nine hundred nine".