82819406 has 4 divisors (see below), whose sum is σ = 124229112. Its totient is φ = 41409702.

The previous prime is 82819403. The next prime is 82819417. The reversal of 82819406 is 60491828.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82819406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82819403) 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 as a sum of consecutive naturals, namely, 20704850 + ... + 20704853.

It is an arithmetic number, because the mean of its divisors is an integer number (31057278).

Almost surely, 2^82819406 is an apocalyptic number.

82819406 is a deficient number, since it is larger than the sum of its proper divisors (41409706).

82819406 is a wasteful number, since it uses less digits than its factorization.

82819406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41409705.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 82819406 is about 9100.5167985120. The cubic root of 82819406 is about 435.8904664107.

The spelling of 82819406 in words is "eighty-two million, eight hundred nineteen thousand, four hundred six".