84987347 has 2 divisors, whose sum is σ = 84987348. Its totient is φ = 84987346.

The previous prime is 84987319. The next prime is 84987349. The reversal of 84987347 is 74378948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84987347 - 2¹⁰ = 84986323 is a prime.

Together with 84987349, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84987295 and 84987304.

It is not a weakly prime, because it can be changed into another prime (84987349) 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, 42493673 + 42493674.

It is an arithmetic number, because the mean of its divisors is an integer number (42493674).

Almost surely, 2^84987347 is an apocalyptic number.

84987347 is a deficient number, since it is larger than the sum of its proper divisors (1).

84987347 is an equidigital number, since it uses as much as digits as its factorization.

84987347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The square root of 84987347 is about 9218.8582264834. The cubic root of 84987347 is about 439.6611492368.

The spelling of 84987347 in words is "eighty-four million, nine hundred eighty-seven thousand, three hundred forty-seven".