110720009 has 4 divisors (see below), whose sum is σ = 110946000. Its totient is φ = 110494020.

The previous prime is 110719993. The next prime is 110720017. The reversal of 110720009 is 900027011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900027011 = 13 ⋅69232847.

It is a cyclic number.

It is not a de Polignac number, because 110720009 - 2⁴ = 110719993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (110720089) 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, 112259 + ... + 113240.

It is an arithmetic number, because the mean of its divisors is an integer number (27736500).

Almost surely, 2^110720009 is an apocalyptic number.

It is an amenable number.

110720009 is a deficient number, since it is larger than the sum of its proper divisors (225991).

110720009 is an equidigital number, since it uses as much as digits as its factorization.

110720009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225990.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 110720009 is about 10522.3575780335. The cubic root of 110720009 is about 480.1851267970.

The spelling of 110720009 in words is "one hundred ten million, seven hundred twenty thousand, nine".