7223409 has 12 divisors (see below), whose sum is σ = 10462452. Its totient is φ = 4802400.

The previous prime is 7223369. The next prime is 7223417. The reversal of 7223409 is 9043227.

7223409 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 705600 + 6517809 = 840^2 + 2553^2 .

It is not a de Polignac number, because 7223409 - 2¹³ = 7215217 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7223609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3279 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (871871).

Almost surely, 2^7223409 is an apocalyptic number.

It is an amenable number.

7223409 is a deficient number, since it is larger than the sum of its proper divisors (3239043).

7223409 is a wasteful number, since it uses less digits than its factorization.

7223409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2205 counting only the distinct ones).

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

The square root of 7223409 is about 2687.6400428629. The cubic root of 7223409 is about 193.3069203578.

The spelling of 7223409 in words is "seven million, two hundred twenty-three thousand, four hundred nine".