84808013 has 2 divisors, whose sum is σ = 84808014. Its totient is φ = 84808012.

The previous prime is 84808007. The next prime is 84808021. The reversal of 84808013 is 31080848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84400969 + 407044 = 9187^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 84808013 - 2⁸ = 84807757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84808063) 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, 42404006 + 42404007.

It is an arithmetic number, because the mean of its divisors is an integer number (42404007).

Almost surely, 2^84808013 is an apocalyptic number.

It is an amenable number.

84808013 is a deficient number, since it is larger than the sum of its proper divisors (1).

84808013 is an equidigital number, since it uses as much as digits as its factorization.

84808013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 84808013 is about 9209.1266143973. The cubic root of 84808013 is about 439.3516846757.

The spelling of 84808013 in words is "eighty-four million, eight hundred eight thousand, thirteen".