86140819 has 16 divisors (see below), whose sum is σ = 95869440. Its totient is φ = 76982400.

The previous prime is 86140793. The next prime is 86140849. The reversal of 86140819 is 91804168.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 86140819 - 2⁵ = 86140787 is a prime.

It is a super-2 number, since 2×86140819² = 14840481395981522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86140849) 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 in 15 ways as a sum of consecutive naturals, for example, 58312 + ... + 59770.

It is an arithmetic number, because the mean of its divisors is an integer number (5991840).

Almost surely, 2^86140819 is an apocalyptic number.

86140819 is a deficient number, since it is larger than the sum of its proper divisors (9728621).

86140819 is a wasteful number, since it uses less digits than its factorization.

86140819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 86140819 is about 9281.2078416551. The cubic root of 86140819 is about 441.6412857058.

The spelling of 86140819 in words is "eighty-six million, one hundred forty thousand, eight hundred nineteen".