86984549 has 2 divisors, whose sum is σ = 86984550. Its totient is φ = 86984548.

The previous prime is 86984509. The next prime is 86984567. The reversal of 86984549 is 94548968.

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., 74943649 + 12040900 = 8657^2 + 3470^2 .

It is a cyclic number.

It is not a de Polignac number, because 86984549 - 2¹⁶ = 86919013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86984549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86984509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43492274 + 43492275.

It is an arithmetic number, because the mean of its divisors is an integer number (43492275).

Almost surely, 2^86984549 is an apocalyptic number.

It is an amenable number.

86984549 is a deficient number, since it is larger than the sum of its proper divisors (1).

86984549 is an equidigital number, since it uses as much as digits as its factorization.

86984549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 86984549 is about 9326.5507557725. The cubic root of 86984549 is about 443.0785291540.

The spelling of 86984549 in words is "eighty-six million, nine hundred eighty-four thousand, five hundred forty-nine".