86489901209 has 2 divisors, whose sum is σ = 86489901210. Its totient is φ = 86489901208.

The previous prime is 86489901133. The next prime is 86489901257. The reversal of 86489901209 is 90210998468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83778408025 + 2711493184 = 289445^2 + 52072^2 .

It is a cyclic number.

It is not a de Polignac number, because 86489901209 - 2¹⁶ = 86489835673 is a prime.

It is a super-2 number, since 2×86489901209² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86489901259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43244950604 + 43244950605.

It is an arithmetic number, because the mean of its divisors is an integer number (43244950605).

Almost surely, 2^86489901209 is an apocalyptic number.

It is an amenable number.

86489901209 is a deficient number, since it is larger than the sum of its proper divisors (1).

86489901209 is an equidigital number, since it uses as much as digits as its factorization.

86489901209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 86489901209 in words is "eighty-six billion, four hundred eighty-nine million, nine hundred one thousand, two hundred nine".