82399522 has 4 divisors (see below), whose sum is σ = 123599286. Its totient is φ = 41199760.

The previous prime is 82399517. The next prime is 82399543. The reversal of 82399522 is 22599328.

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., 52577001 + 29822521 = 7251^2 + 5461^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 20599879 + ... + 20599882.

Almost surely, 2^82399522 is an apocalyptic number.

82399522 is a deficient number, since it is larger than the sum of its proper divisors (41199764).

82399522 is a wasteful number, since it uses less digits than its factorization.

82399522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41199763.

The product of its digits is 77760, while the sum is 40.

The square root of 82399522 is about 9077.4182452942. The cubic root of 82399522 is about 435.1525813444.

The spelling of 82399522 in words is "eighty-two million, three hundred ninety-nine thousand, five hundred twenty-two".