224395813 has 4 divisors (see below), whose sum is σ = 229170240. Its totient is φ = 219621388.

The previous prime is 224395811. The next prime is 224395819. The reversal of 224395813 is 318593422.

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 a cyclic number.

It is not a de Polignac number, because 224395813 - 2¹ = 224395811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224395811) 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, 2387143 + ... + 2387236.

It is an arithmetic number, because the mean of its divisors is an integer number (57292560).

Almost surely, 2^224395813 is an apocalyptic number.

It is an amenable number.

224395813 is a deficient number, since it is larger than the sum of its proper divisors (4774427).

224395813 is an equidigital number, since it uses as much as digits as its factorization.

224395813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4774426.

The product of its digits is 51840, while the sum is 37.

The square root of 224395813 is about 14979.8468950787. The cubic root of 224395813 is about 607.6752985847.

The spelling of 224395813 in words is "two hundred twenty-four million, three hundred ninety-five thousand, eight hundred thirteen".