1000109987 has 2 divisors, whose sum is σ = 1000109988. Its totient is φ = 1000109986.

The previous prime is 1000109977. The next prime is 1000109993. The reversal of 1000109987 is 7899010001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000109987 - 2²⁴ = 983332771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000109917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500054993 + 500054994.

It is an arithmetic number, because the mean of its divisors is an integer number (500054994).

Almost surely, 2^1000109987 is an apocalyptic number.

1000109987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000109987 is an equidigital number, since it uses as much as digits as its factorization.

1000109987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1000109987 is about 31624.5156010333. The cubic root of 1000109987 is about 1000.0366609893.

Adding to 1000109987 its reverse (7899010001), we get a palindrome (8899119988).

The spelling of 1000109987 in words is "one billion, one hundred nine thousand, nine hundred eighty-seven".