87993559 has 2 divisors, whose sum is σ = 87993560. Its totient is φ = 87993558.

The previous prime is 87993553. The next prime is 87993571. The reversal of 87993559 is 95539978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87993559 - 2³ = 87993551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87993551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43996779 + 43996780.

It is an arithmetic number, because the mean of its divisors is an integer number (43996780).

Almost surely, 2^87993559 is an apocalyptic number.

87993559 is a deficient number, since it is larger than the sum of its proper divisors (1).

87993559 is an equidigital number, since it uses as much as digits as its factorization.

87993559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3061800, while the sum is 55.

The square root of 87993559 is about 9380.4882069112. The cubic root of 87993559 is about 444.7851658371.

The spelling of 87993559 in words is "eighty-seven million, nine hundred ninety-three thousand, five hundred fifty-nine".