10099987 has 8 divisors (see below), whose sum is σ = 10275120. Its totient is φ = 9926400.

The previous prime is 10099979. The next prime is 10099997. The reversal of 10099987 is 78999001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10099987 - 2³ = 10099979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10099907) 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 7 ways as a sum of consecutive naturals, for example, 24987 + ... + 25387.

It is an arithmetic number, because the mean of its divisors is an integer number (1284390).

Almost surely, 2^10099987 is an apocalyptic number.

10099987 is a deficient number, since it is larger than the sum of its proper divisors (175133).

10099987 is an equidigital number, since it uses as much as digits as its factorization.

10099987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 10099987 is about 3178.0476711340. The cubic root of 10099987 is about 216.1591405529.

The spelling of 10099987 in words is "ten million, ninety-nine thousand, nine hundred eighty-seven".