84959439 has 4 divisors (see below), whose sum is σ = 113279256. Its totient is φ = 56639624.

The previous prime is 84959423. The next prime is 84959449. The reversal of 84959439 is 93495948.

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 84959439 - 2⁴ = 84959423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84959391 and 84959400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84959449) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14159904 + ... + 14159909.

It is an arithmetic number, because the mean of its divisors is an integer number (28319814).

Almost surely, 2^84959439 is an apocalyptic number.

84959439 is a deficient number, since it is larger than the sum of its proper divisors (28319817).

84959439 is a wasteful number, since it uses less digits than its factorization.

84959439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28319816.

The product of its digits is 1399680, while the sum is 51.

The square root of 84959439 is about 9217.3444657342. The cubic root of 84959439 is about 439.6130189087.

The spelling of 84959439 in words is "eighty-four million, nine hundred fifty-nine thousand, four hundred thirty-nine".