224394891 has 8 divisors (see below), whose sum is σ = 341935104. Its totient is φ = 128225640.

The previous prime is 224394887. The next prime is 224394979. The reversal of 224394891 is 198493422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 224394891 - 2² = 224394887 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (224394851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5342715 + ... + 5342756.

It is an arithmetic number, because the mean of its divisors is an integer number (42741888).

Almost surely, 2^224394891 is an apocalyptic number.

224394891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

224394891 is a deficient number, since it is larger than the sum of its proper divisors (117540213).

224394891 is a wasteful number, since it uses less digits than its factorization.

224394891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685481.

The product of its digits is 124416, while the sum is 42.

The square root of 224394891 is about 14979.8161203668. The cubic root of 224394891 is about 607.6744663093.

The spelling of 224394891 in words is "two hundred twenty-four million, three hundred ninety-four thousand, eight hundred ninety-one".