10193987 has 4 divisors (see below), whose sum is σ = 10201296. Its totient is φ = 10186680.

The previous prime is 10193959. The next prime is 10194001. The reversal of 10193987 is 78939101.

10193987 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10193987 - 2⁸ = 10193731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10193987.

It is not an unprimeable number, because it can be changed into a prime (10193957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 4592.

It is an arithmetic number, because the mean of its divisors is an integer number (2550324).

Almost surely, 2^10193987 is an apocalyptic number.

10193987 is a deficient number, since it is larger than the sum of its proper divisors (7309).

10193987 is an equidigital number, since it uses as much as digits as its factorization.

10193987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 10193987 is about 3192.8023740908. The cubic root of 10193987 is about 216.8276644277.

The spelling of 10193987 in words is "ten million, one hundred ninety-three thousand, nine hundred eighty-seven".