84387211 has 2 divisors, whose sum is σ = 84387212. Its totient is φ = 84387210.

The previous prime is 84387203. The next prime is 84387257. The reversal of 84387211 is 11278348.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84387211 - 2³ = 84387203 is a prime.

It is not a weakly prime, because it can be changed into another prime (84387311) 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, 42193605 + 42193606.

It is an arithmetic number, because the mean of its divisors is an integer number (42193606).

Almost surely, 2^84387211 is an apocalyptic number.

84387211 is a deficient number, since it is larger than the sum of its proper divisors (1).

84387211 is an equidigital number, since it uses as much as digits as its factorization.

84387211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 84387211 is about 9186.2511940399. The cubic root of 84387211 is about 438.6238183368.

The spelling of 84387211 in words is "eighty-four million, three hundred eighty-seven thousand, two hundred eleven".