86539121 has 2 divisors, whose sum is σ = 86539122. Its totient is φ = 86539120.

The previous prime is 86539111. The next prime is 86539169. The reversal of 86539121 is 12193568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85840225 + 698896 = 9265^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 86539121 - 2¹⁰ = 86538097 is a prime.

It is not a weakly prime, because it can be changed into another prime (86539111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43269560 + 43269561.

It is an arithmetic number, because the mean of its divisors is an integer number (43269561).

Almost surely, 2^86539121 is an apocalyptic number.

It is an amenable number.

86539121 is a deficient number, since it is larger than the sum of its proper divisors (1).

86539121 is an equidigital number, since it uses as much as digits as its factorization.

86539121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 86539121 is about 9302.6405391158. The cubic root of 86539121 is about 442.3209332177.

The spelling of 86539121 in words is "eighty-six million, five hundred thirty-nine thousand, one hundred twenty-one".