8209073 has 4 divisors (see below), whose sum is σ = 8239860. Its totient is φ = 8178288.

The previous prime is 8209063. The next prime is 8209081. The reversal of 8209073 is 3709028.

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

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 8025889 = 428^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 8209073 - 2⁶ = 8209009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8209043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14990 + ... + 15527.

It is an arithmetic number, because the mean of its divisors is an integer number (2059965).

Almost surely, 2^8209073 is an apocalyptic number.

It is an amenable number.

8209073 is a deficient number, since it is larger than the sum of its proper divisors (30787).

8209073 is a wasteful number, since it uses less digits than its factorization.

8209073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30786.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 8209073 is about 2865.1479891971. The cubic root of 8209073 is about 201.7273139850.

The spelling of 8209073 in words is "eight million, two hundred nine thousand, seventy-three".