86041609 has 2 divisors, whose sum is σ = 86041610. Its totient is φ = 86041608.

The previous prime is 86041603. The next prime is 86041639. The reversal of 86041609 is 90614068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82537225 + 3504384 = 9085^2 + 1872^2 .

It is a cyclic number.

It is not a de Polignac number, because 86041609 - 2⁵ = 86041577 is a prime.

It is not a weakly prime, because it can be changed into another prime (86041603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43020804 + 43020805.

It is an arithmetic number, because the mean of its divisors is an integer number (43020805).

Almost surely, 2^86041609 is an apocalyptic number.

It is an amenable number.

86041609 is a deficient number, since it is larger than the sum of its proper divisors (1).

86041609 is an equidigital number, since it uses as much as digits as its factorization.

86041609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 86041609 is about 9275.8616311370. The cubic root of 86041609 is about 441.4716717172.

The spelling of 86041609 in words is "eighty-six million, forty-one thousand, six hundred nine".