109727987 has 2 divisors, whose sum is σ = 109727988. Its totient is φ = 109727986.

The previous prime is 109727951. The next prime is 109728001. The reversal of 109727987 is 789727901.

It is a strong prime.

It is an emirp because it is prime and its reverse (789727901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109727987 - 2⁶ = 109727923 is a prime.

It is a super-2 number, since 2×109727987² = 24080462262144338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (109727927) 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 as a sum of consecutive naturals, namely, 54863993 + 54863994.

It is an arithmetic number, because the mean of its divisors is an integer number (54863994).

Almost surely, 2^109727987 is an apocalyptic number.

109727987 is a deficient number, since it is larger than the sum of its proper divisors (1).

109727987 is an equidigital number, since it uses as much as digits as its factorization.

109727987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 109727987 is about 10475.1127440233. The cubic root of 109727987 is about 478.7467116827.

The spelling of 109727987 in words is "one hundred nine million, seven hundred twenty-seven thousand, nine hundred eighty-seven".