7209973 has 4 divisors (see below), whose sum is σ = 7385868. Its totient is φ = 7034080.

The previous prime is 7209947. The next prime is 7210001. The reversal of 7209973 is 3799027.

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 1483524 + 5726449 = 1218^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 7209973 - 2¹⁷ = 7078901 is a prime.

It is a Duffinian number.

7209973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7209673) 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, 87886 + ... + 87967.

It is an arithmetic number, because the mean of its divisors is an integer number (1846467).

Almost surely, 2^7209973 is an apocalyptic number.

It is an amenable number.

7209973 is a deficient number, since it is larger than the sum of its proper divisors (175895).

7209973 is a wasteful number, since it uses less digits than its factorization.

7209973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175894.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 7209973 is about 2685.1392887521. The cubic root of 7209973 is about 193.1869915813.

The spelling of 7209973 in words is "seven million, two hundred nine thousand, nine hundred seventy-three".