7227389 has 4 divisors (see below), whose sum is σ = 7783356. Its totient is φ = 6671424.

The previous prime is 7227379. The next prime is 7227403. The reversal of 7227389 is 9837227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9837227 = 37 ⋅265871.

It can be written as a sum of positive squares in 2 ways, for example, as 765625 + 6461764 = 875^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 7227389 - 2¹⁶ = 7161853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7227379) 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, 277964 + ... + 277989.

It is an arithmetic number, because the mean of its divisors is an integer number (1945839).

Almost surely, 2^7227389 is an apocalyptic number.

It is an amenable number.

7227389 is a deficient number, since it is larger than the sum of its proper divisors (555967).

7227389 is a wasteful number, since it uses less digits than its factorization.

7227389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555966.

The product of its digits is 42336, while the sum is 38.

The square root of 7227389 is about 2688.3803674332. The cubic root of 7227389 is about 193.3424169995.

The spelling of 7227389 in words is "seven million, two hundred twenty-seven thousand, three hundred eighty-nine".