110659991 has 4 divisors (see below), whose sum is σ = 119172312. Its totient is φ = 102147672.

The previous prime is 110659957. The next prime is 110660029. The reversal of 110659991 is 199956011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199956011 = 5179 ⋅38609.

It is a cyclic number.

It is not a de Polignac number, because 110659991 - 2¹⁴ = 110643607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110659921) 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, 4256141 + ... + 4256166.

It is an arithmetic number, because the mean of its divisors is an integer number (29793078).

Almost surely, 2^110659991 is an apocalyptic number.

110659991 is a deficient number, since it is larger than the sum of its proper divisors (8512321).

110659991 is an equidigital number, since it uses as much as digits as its factorization.

110659991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8512320.

The product of its (nonzero) digits is 21870, while the sum is 41.

The square root of 110659991 is about 10519.5052640321. The cubic root of 110659991 is about 480.0983464574.

The spelling of 110659991 in words is "one hundred ten million, six hundred fifty-nine thousand, nine hundred ninety-one".