100286987 has 4 divisors (see below), whose sum is σ = 100796256. Its totient is φ = 99777720.

The previous prime is 100286981. The next prime is 100287001. The reversal of 100286987 is 789682001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789682001 = 109 ⋅7244789.

It is a cyclic number.

It is not a de Polignac number, because 100286987 - 2¹⁸ = 100024843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100286981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254339 + ... + 254732.

It is an arithmetic number, because the mean of its divisors is an integer number (25199064).

Almost surely, 2^100286987 is an apocalyptic number.

100286987 is a deficient number, since it is larger than the sum of its proper divisors (509269).

100286987 is an equidigital number, since it uses as much as digits as its factorization.

100286987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509268.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 100286987 is about 10014.3390695542. The cubic root of 100286987 is about 464.6024844905.

The spelling of 100286987 in words is "one hundred million, two hundred eighty-six thousand, nine hundred eighty-seven".