84685039 has 2 divisors, whose sum is σ = 84685040. Its totient is φ = 84685038.

The previous prime is 84685009. The next prime is 84685063. The reversal of 84685039 is 93058648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84685039 - 2²³ = 76296431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84684986 and 84685004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84685009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42342519 + 42342520.

It is an arithmetic number, because the mean of its divisors is an integer number (42342520).

Almost surely, 2^84685039 is an apocalyptic number.

84685039 is a deficient number, since it is larger than the sum of its proper divisors (1).

84685039 is an equidigital number, since it uses as much as digits as its factorization.

84685039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 84685039 is about 9202.4474461960. The cubic root of 84685039 is about 439.1392245254.

The spelling of 84685039 in words is "eighty-four million, six hundred eighty-five thousand, thirty-nine".