84830971 has 2 divisors, whose sum is σ = 84830972. Its totient is φ = 84830970.

The previous prime is 84830957. The next prime is 84830981. The reversal of 84830971 is 17903848.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84830971 - 2⁷ = 84830843 is a prime.

It is not a weakly prime, because it can be changed into another prime (84830951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42415485 + 42415486.

It is an arithmetic number, because the mean of its divisors is an integer number (42415486).

Almost surely, 2^84830971 is an apocalyptic number.

84830971 is a deficient number, since it is larger than the sum of its proper divisors (1).

84830971 is an equidigital number, since it uses as much as digits as its factorization.

84830971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 84830971 is about 9210.3730109046. The cubic root of 84830971 is about 439.3913260790.

The spelling of 84830971 in words is "eighty-four million, eight hundred thirty thousand, nine hundred seventy-one".