86141569 has 2 divisors, whose sum is σ = 86141570. Its totient is φ = 86141568.

The previous prime is 86141551. The next prime is 86141597. The reversal of 86141569 is 96514168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75481344 + 10660225 = 8688^2 + 3265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86141569 is a prime.

It is a super-2 number, since 2×86141569² = 14840739819563522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86142569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43070784 + 43070785.

It is an arithmetic number, because the mean of its divisors is an integer number (43070785).

Almost surely, 2^86141569 is an apocalyptic number.

It is an amenable number.

86141569 is a deficient number, since it is larger than the sum of its proper divisors (1).

86141569 is an equidigital number, since it uses as much as digits as its factorization.

86141569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 86141569 is about 9281.2482457911. The cubic root of 86141569 is about 441.6425674442.

The spelling of 86141569 in words is "eighty-six million, one hundred forty-one thousand, five hundred sixty-nine".