84971459 has 2 divisors, whose sum is σ = 84971460. Its totient is φ = 84971458.

The previous prime is 84971449. The next prime is 84971461. The reversal of 84971459 is 95417948.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84971459 is a prime.

Together with 84971461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84971429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42485729 + 42485730.

It is an arithmetic number, because the mean of its divisors is an integer number (42485730).

Almost surely, 2^84971459 is an apocalyptic number.

84971459 is a deficient number, since it is larger than the sum of its proper divisors (1).

84971459 is an equidigital number, since it uses as much as digits as its factorization.

84971459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 84971459 is about 9217.9964742888. The cubic root of 84971459 is about 439.6337499751.

The spelling of 84971459 in words is "eighty-four million, nine hundred seventy-one thousand, four hundred fifty-nine".