84525839 has 2 divisors, whose sum is σ = 84525840. Its totient is φ = 84525838.

The previous prime is 84525829. The next prime is 84525841. The reversal of 84525839 is 93852548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84525839 - 2⁴ = 84525823 is a prime.

Together with 84525841, 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 84525839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84525829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42262919 + 42262920.

It is an arithmetic number, because the mean of its divisors is an integer number (42262920).

Almost surely, 2^84525839 is an apocalyptic number.

84525839 is a deficient number, since it is larger than the sum of its proper divisors (1).

84525839 is an equidigital number, since it uses as much as digits as its factorization.

84525839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 84525839 is about 9193.7935043158. The cubic root of 84525839 is about 438.8638716024.

The spelling of 84525839 in words is "eighty-four million, five hundred twenty-five thousand, eight hundred thirty-nine".