827258989 has 2 divisors, whose sum is σ = 827258990. Its totient is φ = 827258988.

The previous prime is 827258977. The next prime is 827259011. The reversal of 827258989 is 989852728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821280964 + 5978025 = 28658^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 827258989 - 2¹³ = 827250797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827258489) 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, 413629494 + 413629495.

It is an arithmetic number, because the mean of its divisors is an integer number (413629495).

Almost surely, 2^827258989 is an apocalyptic number.

It is an amenable number.

827258989 is a deficient number, since it is larger than the sum of its proper divisors (1).

827258989 is an equidigital number, since it uses as much as digits as its factorization.

827258989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 58.

The square root of 827258989 is about 28762.1103015756. The cubic root of 827258989 is about 938.7439800016.

The spelling of 827258989 in words is "eight hundred twenty-seven million, two hundred fifty-eight thousand, nine hundred eighty-nine".