84324239 has 4 divisors (see below), whose sum is σ = 85112424. Its totient is φ = 83536056.

The previous prime is 84324217. The next prime is 84324241. The reversal of 84324239 is 93242348.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84324239 is a prime.

It is a super-2 number, since 2×84324239² = 14221154565858242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84324199 and 84324208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84324259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393932 + ... + 394145.

It is an arithmetic number, because the mean of its divisors is an integer number (21278106).

Almost surely, 2^84324239 is an apocalyptic number.

84324239 is a deficient number, since it is larger than the sum of its proper divisors (788185).

84324239 is a wasteful number, since it uses less digits than its factorization.

84324239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788184.

The product of its digits is 41472, while the sum is 35.

The square root of 84324239 is about 9182.8230408737. The cubic root of 84324239 is about 438.5146869012.

The spelling of 84324239 in words is "eighty-four million, three hundred twenty-four thousand, two hundred thirty-nine".