84323839 has 4 divisors (see below), whose sum is σ = 86380560. Its totient is φ = 82267120.

The previous prime is 84323831. The next prime is 84323867. The reversal of 84323839 is 93832348.

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

It is a cyclic number.

It is not a de Polignac number, because 84323839 - 2³ = 84323831 is a prime.

It is a super-2 number, since 2×84323839² = 14221019647395842, which contains 22 as substring.

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 a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84323831) 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 3 ways as a sum of consecutive naturals, for example, 1028299 + ... + 1028380.

It is an arithmetic number, because the mean of its divisors is an integer number (21595140).

Almost surely, 2^84323839 is an apocalyptic number.

84323839 is a deficient number, since it is larger than the sum of its proper divisors (2056721).

84323839 is a wasteful number, since it uses less digits than its factorization.

84323839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056720.

The product of its digits is 124416, while the sum is 40.

The square root of 84323839 is about 9182.8012610532. The cubic root of 84323839 is about 438.5139935215.

The spelling of 84323839 in words is "eighty-four million, three hundred twenty-three thousand, eight hundred thirty-nine".