913235489 has 2 divisors, whose sum is σ = 913235490. Its totient is φ = 913235488.

The previous prime is 913235431. The next prime is 913235509. The reversal of 913235489 is 984532319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 520204864 + 393030625 = 22808^2 + 19825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913235489 is a prime.

It is not a weakly prime, because it can be changed into another prime (913235429) 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, 456617744 + 456617745.

It is an arithmetic number, because the mean of its divisors is an integer number (456617745).

Almost surely, 2^913235489 is an apocalyptic number.

It is an amenable number.

913235489 is a deficient number, since it is larger than the sum of its proper divisors (1).

913235489 is an equidigital number, since it uses as much as digits as its factorization.

913235489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 913235489 is about 30219.7863824349. The cubic root of 913235489 is about 970.1992324667.

The spelling of 913235489 in words is "nine hundred thirteen million, two hundred thirty-five thousand, four hundred eighty-nine".