7273489 has 2 divisors, whose sum is σ = 7273490. Its totient is φ = 7273488.

The previous prime is 7273481. The next prime is 7273507. The reversal of 7273489 is 9843727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6718464 + 555025 = 2592^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 7273489 - 2³ = 7273481 is a prime.

It is not a weakly prime, because it can be changed into another prime (7273481) 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 as a sum of consecutive naturals, namely, 3636744 + 3636745.

It is an arithmetic number, because the mean of its divisors is an integer number (3636745).

Almost surely, 2^7273489 is an apocalyptic number.

It is an amenable number.

7273489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7273489 is an equidigital number, since it uses as much as digits as its factorization.

7273489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 7273489 is about 2696.9406741714. The cubic root of 7273489 is about 193.7526251465.

Subtracting from 7273489 its product of digits (84672), we obtain a palindrome (7188817).

The spelling of 7273489 in words is "seven million, two hundred seventy-three thousand, four hundred eighty-nine".