82259389 has 2 divisors, whose sum is σ = 82259390. Its totient is φ = 82259388.

The previous prime is 82259371. The next prime is 82259449. The reversal of 82259389 is 98395228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 24423364 = 7605^2 + 4942^2 .

It is a cyclic number.

It is not a de Polignac number, because 82259389 - 2²³ = 73870781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82259329) 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, 41129694 + 41129695.

It is an arithmetic number, because the mean of its divisors is an integer number (41129695).

Almost surely, 2^82259389 is an apocalyptic number.

It is an amenable number.

82259389 is a deficient number, since it is larger than the sum of its proper divisors (1).

82259389 is an equidigital number, since it uses as much as digits as its factorization.

82259389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 82259389 is about 9069.6961911632. The cubic root of 82259389 is about 434.9057601813.

The spelling of 82259389 in words is "eighty-two million, two hundred fifty-nine thousand, three hundred eighty-nine".