8071409 has 4 divisors (see below), whose sum is σ = 8496240. Its totient is φ = 7646580.

The previous prime is 8071387. The next prime is 8071411. The reversal of 8071409 is 9041708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8071409 - 2⁸ = 8071153 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 (8071429) 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, 212387 + ... + 212424.

It is an arithmetic number, because the mean of its divisors is an integer number (2124060).

Almost surely, 2^8071409 is an apocalyptic number.

It is an amenable number.

8071409 is a deficient number, since it is larger than the sum of its proper divisors (424831).

8071409 is a wasteful number, since it uses less digits than its factorization.

8071409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424830.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8071409 is about 2841.0225271898. The cubic root of 8071409 is about 200.5933131570.

Subtracting 8071409 from its reverse (9041708), we obtain a cube (970299 = 99³).

The spelling of 8071409 in words is "eight million, seventy-one thousand, four hundred nine".