80139082 has 4 divisors (see below), whose sum is σ = 120208626. Its totient is φ = 40069540.

The previous prime is 80139079. The next prime is 80139083. The reversal of 80139082 is 28093108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54037201 + 26101881 = 7351^2 + 5109^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80139083) 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 as a sum of consecutive naturals, namely, 20034769 + ... + 20034772.

Almost surely, 2^80139082 is an apocalyptic number.

80139082 is a deficient number, since it is larger than the sum of its proper divisors (40069544).

80139082 is a wasteful number, since it uses less digits than its factorization.

80139082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40069543.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 80139082 is about 8952.0434538713. The cubic root of 80139082 is about 431.1364960126.

The spelling of 80139082 in words is "eighty million, one hundred thirty-nine thousand, eighty-two".