84211291 has 2 divisors, whose sum is σ = 84211292. Its totient is φ = 84211290.

The previous prime is 84211279. The next prime is 84211333. The reversal of 84211291 is 19211248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84211291 - 2⁷ = 84211163 is a prime.

It is not a weakly prime, because it can be changed into another prime (84211201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42105645 + 42105646.

It is an arithmetic number, because the mean of its divisors is an integer number (42105646).

Almost surely, 2^84211291 is an apocalyptic number.

84211291 is a deficient number, since it is larger than the sum of its proper divisors (1).

84211291 is an equidigital number, since it uses as much as digits as its factorization.

84211291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The square root of 84211291 is about 9176.6710194929. The cubic root of 84211291 is about 438.3188100971.

The spelling of 84211291 in words is "eighty-four million, two hundred eleven thousand, two hundred ninety-one".