73166939 has 4 divisors (see below), whose sum is σ = 73224480. Its totient is φ = 73109400.

The previous prime is 73166923. The next prime is 73166941. The reversal of 73166939 is 93966137.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73166939 - 2⁴ = 73166923 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 73166939.

It is not an unprimeable number, because it can be changed into a prime (73166909) 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 3 ways as a sum of consecutive naturals, for example, 26819 + ... + 29420.

It is an arithmetic number, because the mean of its divisors is an integer number (18306120).

Almost surely, 2^73166939 is an apocalyptic number.

73166939 is a deficient number, since it is larger than the sum of its proper divisors (57541).

73166939 is a wasteful number, since it uses less digits than its factorization.

73166939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57540.

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

The square root of 73166939 is about 8553.7675324970. The cubic root of 73166939 is about 418.2522591555.

The spelling of 73166939 in words is "seventy-three million, one hundred sixty-six thousand, nine hundred thirty-nine".