80115439 has 4 divisors (see below), whose sum is σ = 82699840. Its totient is φ = 77531040.

The previous prime is 80115433. The next prime is 80115449. The reversal of 80115439 is 93451108.

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 80115439 - 2⁷ = 80115311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2584369 = 80115439 / (8 + 0 + 1 + 1 + 5 + 4 + 3 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80115439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80115433) 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 3 ways as a sum of consecutive naturals, for example, 1292154 + ... + 1292215.

It is an arithmetic number, because the mean of its divisors is an integer number (20674960).

Almost surely, 2^80115439 is an apocalyptic number.

80115439 is a deficient number, since it is larger than the sum of its proper divisors (2584401).

80115439 is a wasteful number, since it uses less digits than its factorization.

80115439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584400.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 80115439 is about 8950.7228199738. The cubic root of 80115439 is about 431.0940932193.

The spelling of 80115439 in words is "eighty million, one hundred fifteen thousand, four hundred thirty-nine".