86969 has 2 divisors, whose sum is σ = 86970. Its totient is φ = 86968.

The previous prime is 86959. The next prime is 86981. The reversal of 86969 is 96968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44944 + 42025 = 212^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 86969 - 2¹⁶ = 21433 is a prime.

It is a super-2 number, since 2×86969² = 15127213922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43484 + 43485.

It is an arithmetic number, because the mean of its divisors is an integer number (43485).

2⁸⁶⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

86969 is a deficient number, since it is larger than the sum of its proper divisors (1).

86969 is an equidigital number, since it uses as much as digits as its factorization.

86969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 86969 is about 294.9050694715. The cubic root of 86969 is about 44.3052126616.

Subtracting 86969 from its reverse (96968), we obtain a palindrome (9999).

The spelling of 86969 in words is "eighty-six thousand, nine hundred sixty-nine".