86380405 has 8 divisors (see below), whose sum is σ = 103706712. Its totient is φ = 69070848.

The previous prime is 86380397. The next prime is 86380471. The reversal of 86380405 is 50408368.

It can be written as a sum of positive squares in 4 ways, for example, as 11350161 + 75030244 = 3369^2 + 8662^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 86380405 - 2³ = 86380397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16149 + ... + 20821.

It is an arithmetic number, because the mean of its divisors is an integer number (12963339).

Almost surely, 2^86380405 is an apocalyptic number.

It is an amenable number.

86380405 is a deficient number, since it is larger than the sum of its proper divisors (17326307).

86380405 is a wasteful number, since it uses less digits than its factorization.

86380405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8375.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 86380405 is about 9294.1059279524. The cubic root of 86380405 is about 442.0503566631.

The spelling of 86380405 in words is "eighty-six million, three hundred eighty thousand, four hundred five".