86028919 has 4 divisors (see below), whose sum is σ = 87065496. Its totient is φ = 84992344.

The previous prime is 86028889. The next prime is 86028931. The reversal of 86028919 is 91982068.

It is a happy number.

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 86028919 - 2⁷ = 86028791 is a prime.

It is a super-2 number, since 2×86028919² = 14801949808617122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86028949) 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, 518164 + ... + 518329.

It is an arithmetic number, because the mean of its divisors is an integer number (21766374).

Almost surely, 2^86028919 is an apocalyptic number.

86028919 is a deficient number, since it is larger than the sum of its proper divisors (1036577).

86028919 is a wasteful number, since it uses less digits than its factorization.

86028919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036576.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 86028919 is about 9275.1775724242. The cubic root of 86028919 is about 441.4499669047.

The spelling of 86028919 in words is "eighty-six million, twenty-eight thousand, nine hundred nineteen".