86828549 has 2 divisors, whose sum is σ = 86828550. Its totient is φ = 86828548.

The previous prime is 86828513. The next prime is 86828557. The reversal of 86828549 is 94582868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 30052324 = 7535^2 + 5482^2 .

It is a cyclic number.

It is not a de Polignac number, because 86828549 - 2⁸ = 86828293 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86828497 and 86828506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86828509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43414274 + 43414275.

It is an arithmetic number, because the mean of its divisors is an integer number (43414275).

Almost surely, 2^86828549 is an apocalyptic number.

It is an amenable number.

86828549 is a deficient number, since it is larger than the sum of its proper divisors (1).

86828549 is an equidigital number, since it uses as much as digits as its factorization.

86828549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The square root of 86828549 is about 9318.1837822614. The cubic root of 86828549 is about 442.8134950640.

The spelling of 86828549 in words is "eighty-six million, eight hundred twenty-eight thousand, five hundred forty-nine".