113909447 has 4 divisors (see below), whose sum is σ = 115609656. Its totient is φ = 112209240.

The previous prime is 113909443. The next prime is 113909459. The reversal of 113909447 is 744909311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744909311 = 26683 ⋅27917.

It is a cyclic number.

It is not a de Polignac number, because 113909447 - 2² = 113909443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113909447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113909441) 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, 850004 + ... + 850137.

It is an arithmetic number, because the mean of its divisors is an integer number (28902414).

Almost surely, 2^113909447 is an apocalyptic number.

113909447 is a deficient number, since it is larger than the sum of its proper divisors (1700209).

113909447 is an equidigital number, since it uses as much as digits as its factorization.

113909447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700208.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 113909447 is about 10672.8368768571. The cubic root of 113909447 is about 484.7523403441.

The spelling of 113909447 in words is "one hundred thirteen million, nine hundred nine thousand, four hundred forty-seven".