84866291 has 2 divisors, whose sum is σ = 84866292. Its totient is φ = 84866290.

The previous prime is 84866281. The next prime is 84866321. The reversal of 84866291 is 19266848.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84866291 - 2¹⁸ = 84604147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (84866281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42433145 + 42433146.

It is an arithmetic number, because the mean of its divisors is an integer number (42433146).

Almost surely, 2^84866291 is an apocalyptic number.

84866291 is a deficient number, since it is larger than the sum of its proper divisors (1).

84866291 is an equidigital number, since it uses as much as digits as its factorization.

84866291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 84866291 is about 9212.2902147077. The cubic root of 84866291 is about 439.4522988900.

The spelling of 84866291 in words is "eighty-four million, eight hundred sixty-six thousand, two hundred ninety-one".