87943 has 2 divisors, whose sum is σ = 87944. Its totient is φ = 87942.

The previous prime is 87931. The next prime is 87959. The reversal of 87943 is 34978.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87943 - 2⁵ = 87911 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43971 + 43972.

It is an arithmetic number, because the mean of its divisors is an integer number (43972).

2⁸⁷⁹⁴³ is an apocalyptic number.

87943 is a deficient number, since it is larger than the sum of its proper divisors (1).

87943 is an equidigital number, since it uses as much as digits as its factorization.

87943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 87943 is about 296.5518504410. The cubic root of 87943 is about 44.4699961868.

The spelling of 87943 in words is "eighty-seven thousand, nine hundred forty-three".