87443 has 2 divisors, whose sum is σ = 87444. Its totient is φ = 87442.

The previous prime is 87433. The next prime is 87473. The reversal of 87443 is 34478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87443 - 2⁴ = 87427 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (87403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721 + 43722.

It is an arithmetic number, because the mean of its divisors is an integer number (43722).

2⁸⁷⁴⁴³ is an apocalyptic number.

87443 is a deficient number, since it is larger than the sum of its proper divisors (1).

87443 is an equidigital number, since it uses as much as digits as its factorization.

87443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 87443 is about 295.7076258739. The cubic root of 87443 is about 44.3855578925.

The spelling of 87443 in words is "eighty-seven thousand, four hundred forty-three".