86554409 has 2 divisors, whose sum is σ = 86554410. Its totient is φ = 86554408.

The previous prime is 86554379. The next prime is 86554417. The reversal of 86554409 is 90445568.

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., 69973225 + 16581184 = 8365^2 + 4072^2 .

It is a cyclic number.

It is not a de Polignac number, because 86554409 - 2¹⁶ = 86488873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86554469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43277204 + 43277205.

It is an arithmetic number, because the mean of its divisors is an integer number (43277205).

Almost surely, 2^86554409 is an apocalyptic number.

It is an amenable number.

86554409 is a deficient number, since it is larger than the sum of its proper divisors (1).

86554409 is an equidigital number, since it uses as much as digits as its factorization.

86554409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 86554409 is about 9303.4622050073. The cubic root of 86554409 is about 442.3469784875.

The spelling of 86554409 in words is "eighty-six million, five hundred fifty-four thousand, four hundred nine".