82144039 has 2 divisors, whose sum is σ = 82144040. Its totient is φ = 82144038.

The previous prime is 82144019. The next prime is 82144067. The reversal of 82144039 is 93044128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82144039 - 2⁷ = 82143911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82144039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82144009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41072019 + 41072020.

It is an arithmetic number, because the mean of its divisors is an integer number (41072020).

Almost surely, 2^82144039 is an apocalyptic number.

82144039 is a deficient number, since it is larger than the sum of its proper divisors (1).

82144039 is an equidigital number, since it uses as much as digits as its factorization.

82144039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 82144039 is about 9063.3348718890. The cubic root of 82144039 is about 434.7023797636.

The spelling of 82144039 in words is "eighty-two million, one hundred forty-four thousand, thirty-nine".