73044009 has 6 divisors (see below), whose sum is σ = 105508026. Its totient is φ = 48696000.

The previous prime is 73043989. The next prime is 73044043. The reversal of 73044009 is 90044037.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 2433600 = 8403^2 + 1560^2 .

It is not a de Polignac number, because 73044009 - 2⁸ = 73043753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73044089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4057992 + ... + 4058009.

It is an arithmetic number, because the mean of its divisors is an integer number (17584671).

Almost surely, 2^73044009 is an apocalyptic number.

It is an amenable number.

73044009 is a deficient number, since it is larger than the sum of its proper divisors (32464017).

73044009 is a wasteful number, since it uses less digits than its factorization.

73044009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116007 (or 8116004 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 73044009 is about 8546.5787891998. The cubic root of 73044009 is about 418.0178884006.

The spelling of 73044009 in words is "seventy-three million, forty-four thousand, nine".