86238019 has 4 divisors (see below), whose sum is σ = 98557744. Its totient is φ = 73918296.

The previous prime is 86238013. The next prime is 86238023. The reversal of 86238019 is 91083268.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86238019 - 2³ = 86238011 is a prime.

It is a super-2 number, since 2×86238019² = 14873991842088722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86238011) 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 3 ways as a sum of consecutive naturals, for example, 6159852 + ... + 6159865.

It is an arithmetic number, because the mean of its divisors is an integer number (24639436).

Almost surely, 2^86238019 is an apocalyptic number.

86238019 is a deficient number, since it is larger than the sum of its proper divisors (12319725).

86238019 is a wasteful number, since it uses less digits than its factorization.

86238019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319724.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 86238019 is about 9286.4427527445. The cubic root of 86238019 is about 441.8073370518.

The spelling of 86238019 in words is "eighty-six million, two hundred thirty-eight thousand, nineteen".