7287239497 has 2 divisors, whose sum is σ = 7287239498. Its totient is φ = 7287239496.

The previous prime is 7287239483. The next prime is 7287239549. The reversal of 7287239497 is 7949327827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6710231056 + 577008441 = 81916^2 + 24021^2 .

It is a cyclic number.

It is not a de Polignac number, because 7287239497 - 2³¹ = 5139755849 is a prime.

It is not a weakly prime, because it can be changed into another prime (7287239417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643619748 + 3643619749.

It is an arithmetic number, because the mean of its divisors is an integer number (3643619749).

Almost surely, 2^7287239497 is an apocalyptic number.

It is an amenable number.

7287239497 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287239497 is an equidigital number, since it uses as much as digits as its factorization.

7287239497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 58.

The square root of 7287239497 is about 85365.3295958025. The cubic root of 7287239497 is about 1938.7464443096.

The spelling of 7287239497 in words is "seven billion, two hundred eighty-seven million, two hundred thirty-nine thousand, four hundred ninety-seven".