113720009 has 8 divisors (see below), whose sum is σ = 122819592. Its totient is φ = 104670720.

The previous prime is 113720003. The next prime is 113720029. The reversal of 113720009 is 900027311.

It can be written as a sum of positive squares in 4 ways, for example, as 765625 + 112954384 = 875^2 + 10628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113720009 - 2²⁴ = 96942793 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 (113720003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7802 + ... + 16979.

It is an arithmetic number, because the mean of its divisors is an integer number (15352449).

Almost surely, 2^113720009 is an apocalyptic number.

It is an amenable number.

113720009 is a deficient number, since it is larger than the sum of its proper divisors (9099583).

113720009 is a wasteful number, since it uses less digits than its factorization.

113720009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25147.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 113720009 is about 10663.9584113968. The cubic root of 113720009 is about 484.4834675103.

The spelling of 113720009 in words is "one hundred thirteen million, seven hundred twenty thousand, nine".