7291489 has 2 divisors, whose sum is σ = 7291490. Its totient is φ = 7291488.

The previous prime is 7291477. The next prime is 7291507. The reversal of 7291489 is 9841927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 1459264 = 2415^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 7291489 - 2⁵ = 7291457 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7291429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645744 + 3645745.

It is an arithmetic number, because the mean of its divisors is an integer number (3645745).

Almost surely, 2^7291489 is an apocalyptic number.

It is an amenable number.

7291489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7291489 is an equidigital number, since it uses as much as digits as its factorization.

7291489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 7291489 is about 2700.2757266620. The cubic root of 7291489 is about 193.9123226579.

The spelling of 7291489 in words is "seven million, two hundred ninety-one thousand, four hundred eighty-nine".