86212289 has 2 divisors, whose sum is σ = 86212290. Its totient is φ = 86212288.

The previous prime is 86212283. The next prime is 86212297. The reversal of 86212289 is 98221268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70845889 + 15366400 = 8417^2 + 3920^2 .

It is a cyclic number.

It is not a de Polignac number, because 86212289 - 2²⁴ = 69435073 is a prime.

It is a super-3 number, since 3×86212289³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (86212283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43106144 + 43106145.

It is an arithmetic number, because the mean of its divisors is an integer number (43106145).

Almost surely, 2^86212289 is an apocalyptic number.

It is an amenable number.

86212289 is a deficient number, since it is larger than the sum of its proper divisors (1).

86212289 is an equidigital number, since it uses as much as digits as its factorization.

86212289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 86212289 is about 9285.0572965383. The cubic root of 86212289 is about 441.7633934267.

The spelling of 86212289 in words is "eighty-six million, two hundred twelve thousand, two hundred eighty-nine".