8106409 has 8 divisors (see below), whose sum is σ = 8245952. Its totient is φ = 7968240.

The previous prime is 8106401. The next prime is 8106421. The reversal of 8106409 is 9046018.

8106409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8106409 - 2³ = 8106401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8106401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21547 + ... + 21919.

It is an arithmetic number, because the mean of its divisors is an integer number (1030744).

Almost surely, 2^8106409 is an apocalyptic number.

It is an amenable number.

8106409 is a deficient number, since it is larger than the sum of its proper divisors (139543).

8106409 is a wasteful number, since it uses less digits than its factorization.

8106409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 8106409 is about 2847.1756180468. The cubic root of 8106409 is about 200.8828389099.

It can be divided in two parts, 8106 and 409, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 8106409 in words is "eight million, one hundred six thousand, four hundred nine".