84487423 has 2 divisors, whose sum is σ = 84487424. Its totient is φ = 84487422.

The previous prime is 84487421. The next prime is 84487439. The reversal of 84487423 is 32478448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84487423 - 2¹ = 84487421 is a prime.

Together with 84487421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84487421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42243711 + 42243712.

It is an arithmetic number, because the mean of its divisors is an integer number (42243712).

Almost surely, 2^84487423 is an apocalyptic number.

84487423 is a deficient number, since it is larger than the sum of its proper divisors (1).

84487423 is an equidigital number, since it uses as much as digits as its factorization.

84487423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 40.

The square root of 84487423 is about 9191.7040313535. The cubic root of 84487423 is about 438.7973753709.

The spelling of 84487423 in words is "eighty-four million, four hundred eighty-seven thousand, four hundred twenty-three".