224042393 has 4 divisors (see below), whose sum is σ = 224677428. Its totient is φ = 223407360.

The previous prime is 224042389. The next prime is 224042431. The reversal of 224042393 is 393240422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393240422 = 2 ⋅196620211.

It can be written as a sum of positive squares in 2 ways, for example, as 90478144 + 133564249 = 9512^2 + 11557^2 .

It is a cyclic number.

It is not a de Polignac number, because 224042393 - 2² = 224042389 is a prime.

It is a super-2 number, since 2×224042393² = 100389987722332898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (224042353) 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, 316988 + ... + 317693.

It is an arithmetic number, because the mean of its divisors is an integer number (56169357).

Almost surely, 2^224042393 is an apocalyptic number.

It is an amenable number.

224042393 is a deficient number, since it is larger than the sum of its proper divisors (635035).

224042393 is an equidigital number, since it uses as much as digits as its factorization.

224042393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635034.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 224042393 is about 14968.0457308227. The cubic root of 224042393 is about 607.3561044931.

The spelling of 224042393 in words is "two hundred twenty-four million, forty-two thousand, three hundred ninety-three".