113456809 has 4 divisors (see below), whose sum is σ = 119428240. Its totient is φ = 107485380.

The previous prime is 113456789. The next prime is 113456821. The reversal of 113456809 is 908654311.

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: 908654311 = 89 ⋅10209599.

It is a cyclic number.

It is not a de Polignac number, because 113456809 - 2⁹ = 113456297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113456839) 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, 2985687 + ... + 2985724.

It is an arithmetic number, because the mean of its divisors is an integer number (29857060).

Almost surely, 2^113456809 is an apocalyptic number.

113456809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

113456809 is a deficient number, since it is larger than the sum of its proper divisors (5971431).

113456809 is an equidigital number, since it uses as much as digits as its factorization.

113456809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971430.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 113456809 is about 10651.6106293837. The cubic root of 113456809 is about 484.1094068291.

The spelling of 113456809 in words is "one hundred thirteen million, four hundred fifty-six thousand, eight hundred nine".