987193 has 2 divisors, whose sum is σ = 987194. Its totient is φ = 987192.

The previous prime is 987191. The next prime is 987199. The reversal of 987193 is 391789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 506944 + 480249 = 712^2 + 693^2 .

It is an emirp because it is prime and its reverse (391789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987193 - 2¹ = 987191 is a prime.

Together with 987191, it forms a pair of twin primes.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (987191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493596 + 493597.

It is an arithmetic number, because the mean of its divisors is an integer number (493597).

2⁹⁸⁷¹⁹³ is an apocalyptic number.

It is an amenable number.

987193 is a deficient number, since it is larger than the sum of its proper divisors (1).

987193 is an equidigital number, since it uses as much as digits as its factorization.

987193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 987193 is about 993.5758652463. The cubic root of 987193 is about 99.5712644855.

The spelling of 987193 in words is "nine hundred eighty-seven thousand, one hundred ninety-three".