86438519 has 2 divisors, whose sum is σ = 86438520. Its totient is φ = 86438518.

The previous prime is 86438503. The next prime is 86438533. The reversal of 86438519 is 91583468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86438519 - 2⁴ = 86438503 is a prime.

It is a super-2 number, since 2×86438519² = 14943235133826722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86438519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86438579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43219259 + 43219260.

It is an arithmetic number, because the mean of its divisors is an integer number (43219260).

Almost surely, 2^86438519 is an apocalyptic number.

86438519 is a deficient number, since it is larger than the sum of its proper divisors (1).

86438519 is an equidigital number, since it uses as much as digits as its factorization.

86438519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 86438519 is about 9297.2317923132. The cubic root of 86438519 is about 442.1494669324.

The spelling of 86438519 in words is "eighty-six million, four hundred thirty-eight thousand, five hundred nineteen".