827258489 has 2 divisors, whose sum is σ = 827258490. Its totient is φ = 827258488.

The previous prime is 827258459. The next prime is 827258491. The reversal of 827258489 is 984852728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661364089 + 165894400 = 25717^2 + 12880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-827258489 is a prime.

Together with 827258491, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 827258489.

It is not a weakly prime, because it can be changed into another prime (827258449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413629244 + 413629245.

It is an arithmetic number, because the mean of its divisors is an integer number (413629245).

Almost surely, 2^827258489 is an apocalyptic number.

It is an amenable number.

827258489 is a deficient number, since it is larger than the sum of its proper divisors (1).

827258489 is an equidigital number, since it uses as much as digits as its factorization.

827258489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 53.

The square root of 827258489 is about 28762.1016095834. The cubic root of 827258489 is about 938.7437908742.

The spelling of 827258489 in words is "eight hundred twenty-seven million, two hundred fifty-eight thousand, four hundred eighty-nine".