113649009 has 4 divisors (see below), whose sum is σ = 151532016. Its totient is φ = 75766004.

The previous prime is 113649001. The next prime is 113649017. The reversal of 113649009 is 900946311.

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.

It is an interprime number because it is at equal distance from previous prime (113649001) and next prime (113649017).

It is a cyclic number.

It is not a de Polignac number, because 113649009 - 2³ = 113649001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113649001) 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, 18941499 + ... + 18941504.

It is an arithmetic number, because the mean of its divisors is an integer number (37883004).

Almost surely, 2^113649009 is an apocalyptic number.

It is an amenable number.

113649009 is a deficient number, since it is larger than the sum of its proper divisors (37883007).

113649009 is an equidigital number, since it uses as much as digits as its factorization.

113649009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37883006.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 113649009 is about 10660.6289214098. The cubic root of 113649009 is about 484.3826189797.

The spelling of 113649009 in words is "one hundred thirteen million, six hundred forty-nine thousand, nine".