109727999 has 4 divisors (see below), whose sum is σ = 109976136. Its totient is φ = 109479864.

The previous prime is 109727987. The next prime is 109728001. The reversal of 109727999 is 999727901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999727901 = 37 ⋅27019673.

It is a cyclic number.

It is not a de Polignac number, because 109727999 - 2¹² = 109723903 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 109727999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109727599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123404 + ... + 124289.

It is an arithmetic number, because the mean of its divisors is an integer number (27494034).

Almost surely, 2^109727999 is an apocalyptic number.

109727999 is a deficient number, since it is larger than the sum of its proper divisors (248137).

109727999 is an equidigital number, since it uses as much as digits as its factorization.

109727999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248136.

The product of its (nonzero) digits is 642978, while the sum is 53.

The square root of 109727999 is about 10475.1133168095. The cubic root of 109727999 is about 478.7467291348.

The spelling of 109727999 in words is "one hundred nine million, seven hundred twenty-seven thousand, nine hundred ninety-nine".