86408919 has 6 divisors (see below), whose sum is σ = 124812896. Its totient is φ = 57605940.

The previous prime is 86408911. The next prime is 86408929. The reversal of 86408919 is 91980468.

It is not a de Polignac number, because 86408919 - 2³ = 86408911 is a prime.

It is a super-2 number, since 2×86408919² = 14933002565497122, 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 (86408911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4800487 + ... + 4800504.

Almost surely, 2^86408919 is an apocalyptic number.

86408919 is a deficient number, since it is larger than the sum of its proper divisors (38403977).

86408919 is a wasteful number, since it uses less digits than its factorization.

86408919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9600997 (or 9600994 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 86408919 is about 9295.6397843290. The cubic root of 86408919 is about 442.0989912935.

The spelling of 86408919 in words is "eighty-six million, four hundred eight thousand, nine hundred nineteen".