8081439 has 4 divisors (see below), whose sum is σ = 10775256. Its totient is φ = 5387624.

The previous prime is 8081419. The next prime is 8081471. The reversal of 8081439 is 9341808.

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 8081439 - 2⁹ = 8080927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081419) 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, 1346904 + ... + 1346909.

It is an arithmetic number, because the mean of its divisors is an integer number (2693814).

Almost surely, 2^8081439 is an apocalyptic number.

8081439 is a deficient number, since it is larger than the sum of its proper divisors (2693817).

8081439 is a wasteful number, since it uses less digits than its factorization.

8081439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693816.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8081439 is about 2842.7871886583. The cubic root of 8081439 is about 200.6763683839.

The spelling of 8081439 in words is "eight million, eighty-one thousand, four hundred thirty-nine".