82813899 has 16 divisors (see below), whose sum is σ = 126409472. Its totient is φ = 47240928.

The previous prime is 82813873. The next prime is 82813909. The reversal of 82813899 is 99831828.

It is a happy number.

It is not a de Polignac number, because 82813899 - 2⁵ = 82813867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82813849) 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 15 ways as a sum of consecutive naturals, for example, 10437 + ... + 16569.

It is an arithmetic number, because the mean of its divisors is an integer number (7900592).

Almost surely, 2^82813899 is an apocalyptic number.

82813899 is a deficient number, since it is larger than the sum of its proper divisors (43595573).

82813899 is a wasteful number, since it uses less digits than its factorization.

82813899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786.

The product of its digits is 248832, while the sum is 48.

The square root of 82813899 is about 9100.2142282476. The cubic root of 82813899 is about 435.8808048184.

The spelling of 82813899 in words is "eighty-two million, eight hundred thirteen thousand, eight hundred ninety-nine".