82179994 has 8 divisors (see below), whose sum is σ = 132752340. Its totient is φ = 37929216.

The previous prime is 82179991. The next prime is 82180001. The reversal of 82179994 is 49997128.

It can be written as a sum of positive squares in 2 ways, for example, as 82137969 + 42025 = 9063^2 + 205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (82179991) 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, 1580359 + ... + 1580410.

Almost surely, 2^82179994 is an apocalyptic number.

82179994 is a deficient number, since it is larger than the sum of its proper divisors (50572346).

82179994 is a wasteful number, since it uses less digits than its factorization.

82179994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160784.

The product of its digits is 326592, while the sum is 49.

The square root of 82179994 is about 9065.3181962907. The cubic root of 82179994 is about 434.7657945669.

The spelling of 82179994 in words is "eighty-two million, one hundred seventy-nine thousand, nine hundred ninety-four".