86868149 has 2 divisors, whose sum is σ = 86868150. Its totient is φ = 86868148.

The previous prime is 86868109. The next prime is 86868151. The reversal of 86868149 is 94186868.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 27300625 = 7718^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 86868149 - 2¹² = 86864053 is a prime.

Together with 86868151, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86868097 and 86868106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86868109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43434074 + 43434075.

It is an arithmetic number, because the mean of its divisors is an integer number (43434075).

Almost surely, 2^86868149 is an apocalyptic number.

It is an amenable number.

86868149 is a deficient number, since it is larger than the sum of its proper divisors (1).

86868149 is an equidigital number, since it uses as much as digits as its factorization.

86868149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 50.

The square root of 86868149 is about 9320.3084176437. The cubic root of 86868149 is about 442.8808029924.

The spelling of 86868149 in words is "eighty-six million, eight hundred sixty-eight thousand, one hundred forty-nine".