82319889 has 16 divisors (see below), whose sum is σ = 112545792. Its totient is φ = 53496528.

The previous prime is 82319879. The next prime is 82319903. The reversal of 82319889 is 98891328.

It is a happy number.

It is not a de Polignac number, because 82319889 - 2¹¹ = 82317841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82319879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38872 + ... + 40934.

It is an arithmetic number, because the mean of its divisors is an integer number (7034112).

Almost surely, 2^82319889 is an apocalyptic number.

It is an amenable number.

82319889 is a deficient number, since it is larger than the sum of its proper divisors (30225903).

82319889 is a wasteful number, since it uses less digits than its factorization.

82319889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

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

The square root of 82319889 is about 9073.0308607433. The cubic root of 82319889 is about 435.0123553103.

The spelling of 82319889 in words is "eighty-two million, three hundred nineteen thousand, eight hundred eighty-nine".