915261449 has 2 divisors, whose sum is σ = 915261450. Its totient is φ = 915261448.

The previous prime is 915261443. The next prime is 915261509. The reversal of 915261449 is 944162519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900300025 + 14961424 = 30005^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 915261449 - 2¹⁶ = 915195913 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (915261443) 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, 457630724 + 457630725.

It is an arithmetic number, because the mean of its divisors is an integer number (457630725).

Almost surely, 2^915261449 is an apocalyptic number.

It is an amenable number.

915261449 is a deficient number, since it is larger than the sum of its proper divisors (1).

915261449 is an equidigital number, since it uses as much as digits as its factorization.

915261449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 915261449 is about 30253.2882345044. The cubic root of 915261449 is about 970.9161461717.

The spelling of 915261449 in words is "nine hundred fifteen million, two hundred sixty-one thousand, four hundred forty-nine".