84267539 has 2 divisors, whose sum is σ = 84267540. Its totient is φ = 84267538.

The previous prime is 84267503. The next prime is 84267541. The reversal of 84267539 is 93576248.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84267539 is a prime.

It is a Sophie Germain prime.

Together with 84267541, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84267539.

It is not a weakly prime, because it can be changed into another prime (84267559) 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 as a sum of consecutive naturals, namely, 42133769 + 42133770.

It is an arithmetic number, because the mean of its divisors is an integer number (42133770).

Almost surely, 2^84267539 is an apocalyptic number.

84267539 is a deficient number, since it is larger than the sum of its proper divisors (1).

84267539 is an equidigital number, since it uses as much as digits as its factorization.

84267539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 84267539 is about 9179.7352358333. The cubic root of 84267539 is about 438.4163784434.

The spelling of 84267539 in words is "eighty-four million, two hundred sixty-seven thousand, five hundred thirty-nine".