82209794 has 4 divisors (see below), whose sum is σ = 123314694. Its totient is φ = 41104896.

The previous prime is 82209791. The next prime is 82209857. The reversal of 82209794 is 49790228.

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., 70341769 + 11868025 = 8387^2 + 3445^2 .

It is not an unprimeable number, because it can be changed into a prime (82209791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20552447 + ... + 20552450.

Almost surely, 2^82209794 is an apocalyptic number.

82209794 is a deficient number, since it is larger than the sum of its proper divisors (41104900).

82209794 is a wasteful number, since it uses less digits than its factorization.

82209794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41104899.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 82209794 is about 9066.9616741222. The cubic root of 82209794 is about 434.8183396139.

The spelling of 82209794 in words is "eighty-two million, two hundred nine thousand, seven hundred ninety-four".