84369539 has 2 divisors, whose sum is σ = 84369540. Its totient is φ = 84369538.

The previous prime is 84369503. The next prime is 84369541. The reversal of 84369539 is 93596348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84369539 is a prime.

It is a super-2 number, since 2×84369539² = 14236438222145042, which contains 22 as substring.

Together with 84369541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84369493 and 84369502.

It is not a weakly prime, because it can be changed into another prime (84369599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42184769 + 42184770.

It is an arithmetic number, because the mean of its divisors is an integer number (42184770).

Almost surely, 2^84369539 is an apocalyptic number.

84369539 is a deficient number, since it is larger than the sum of its proper divisors (1).

84369539 is an equidigital number, since it uses as much as digits as its factorization.

84369539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 84369539 is about 9185.2892714383. The cubic root of 84369539 is about 438.5931979732.

The spelling of 84369539 in words is "eighty-four million, three hundred sixty-nine thousand, five hundred thirty-nine".