80572839 has 4 divisors (see below), whose sum is σ = 107430456. Its totient is φ = 53715224.

The previous prime is 80572837. The next prime is 80572853. The reversal of 80572839 is 93827508.

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 80572839 - 2¹ = 80572837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80572839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80572837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13428804 + ... + 13428809.

It is an arithmetic number, because the mean of its divisors is an integer number (26857614).

Almost surely, 2^80572839 is an apocalyptic number.

80572839 is a deficient number, since it is larger than the sum of its proper divisors (26857617).

80572839 is a wasteful number, since it uses less digits than its factorization.

80572839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26857616.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 80572839 is about 8976.2374634364. The cubic root of 80572839 is about 431.9129464934.

The spelling of 80572839 in words is "eighty million, five hundred seventy-two thousand, eight hundred thirty-nine".