223994293 has 4 divisors (see below), whose sum is σ = 224981280. Its totient is φ = 223007308.

The previous prime is 223994269. The next prime is 223994299. The reversal of 223994293 is 392499322.

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: 392499322 = 2 ⋅196249661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223994293 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 (223994299) 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, 493153 + ... + 493606.

It is an arithmetic number, because the mean of its divisors is an integer number (56245320).

Almost surely, 2^223994293 is an apocalyptic number.

It is an amenable number.

223994293 is a deficient number, since it is larger than the sum of its proper divisors (986987).

223994293 is an equidigital number, since it uses as much as digits as its factorization.

223994293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986986.

The product of its digits is 209952, while the sum is 43.

The square root of 223994293 is about 14966.4388883929. The cubic root of 223994293 is about 607.3126366488.

The spelling of 223994293 in words is "two hundred twenty-three million, nine hundred ninety-four thousand, two hundred ninety-three".