86919843 has 8 divisors (see below), whose sum is σ = 115979008. Its totient is φ = 57903624.

The previous prime is 86919839. The next prime is 86919863. The reversal of 86919843 is 34891968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86919843 - 2² = 86919839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86919792 and 86919801.

It is not an unprimeable number, because it can be changed into a prime (86919863) 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 7 ways as a sum of consecutive naturals, for example, 5671 + ... + 14352.

It is an arithmetic number, because the mean of its divisors is an integer number (14497376).

Almost surely, 2^86919843 is an apocalyptic number.

86919843 is a deficient number, since it is larger than the sum of its proper divisors (29059165).

86919843 is a wasteful number, since it uses less digits than its factorization.

86919843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21473.

The product of its digits is 373248, while the sum is 48.

The square root of 86919843 is about 9323.0811966860. The cubic root of 86919843 is about 442.9686362609.

The spelling of 86919843 in words is "eighty-six million, nine hundred nineteen thousand, eight hundred forty-three".