82119079 has 4 divisors (see below), whose sum is σ = 93850384. Its totient is φ = 70387776.

The previous prime is 82119071. The next prime is 82119109. The reversal of 82119079 is 97091128.

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 82119079 - 2³ = 82119071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82119071) 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, 5865642 + ... + 5865655.

It is an arithmetic number, because the mean of its divisors is an integer number (23462596).

Almost surely, 2^82119079 is an apocalyptic number.

82119079 is a deficient number, since it is larger than the sum of its proper divisors (11731305).

82119079 is a wasteful number, since it uses less digits than its factorization.

82119079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731304.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 82119079 is about 9061.9577906764. The cubic root of 82119079 is about 434.6583462558.

It can be divided in two parts, 821 and 19079, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 82119079 in words is "eighty-two million, one hundred nineteen thousand, seventy-nine".