113993209 has 4 divisors (see below), whose sum is σ = 124356240. Its totient is φ = 103630180.

The previous prime is 113993207. The next prime is 113993227. The reversal of 113993209 is 902399311.

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: 902399311 = 11 ⋅82036301.

It is a cyclic number.

It is not a de Polignac number, because 113993209 - 2¹ = 113993207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113993207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5181499 + ... + 5181520.

It is an arithmetic number, because the mean of its divisors is an integer number (31089060).

Almost surely, 2^113993209 is an apocalyptic number.

It is an amenable number.

113993209 is a deficient number, since it is larger than the sum of its proper divisors (10363031).

113993209 is a wasteful number, since it uses less digits than its factorization.

113993209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363030.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 113993209 is about 10676.7602295828. The cubic root of 113993209 is about 484.8711302488.

The spelling of 113993209 in words is "one hundred thirteen million, nine hundred ninety-three thousand, two hundred nine".