731126489 has 2 divisors, whose sum is σ = 731126490. Its totient is φ = 731126488.

The previous prime is 731126477. The next prime is 731126491. The reversal of 731126489 is 984621137.

731126489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693426889 + 37699600 = 26333^2 + 6140^2 .

It is a cyclic number.

It is not a de Polignac number, because 731126489 - 2⁸ = 731126233 is a prime.

Together with 731126491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (731126989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365563244 + 365563245.

It is an arithmetic number, because the mean of its divisors is an integer number (365563245).

Almost surely, 2^731126489 is an apocalyptic number.

It is an amenable number.

731126489 is a deficient number, since it is larger than the sum of its proper divisors (1).

731126489 is an equidigital number, since it uses as much as digits as its factorization.

731126489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 731126489 is about 27039.3507503416. The cubic root of 731126489 is about 900.8742488444.

The spelling of 731126489 in words is "seven hundred thirty-one million, one hundred twenty-six thousand, four hundred eighty-nine".