223890863 has 4 divisors (see below), whose sum is σ = 255875280. Its totient is φ = 191906448.

The previous prime is 223890857. The next prime is 223890883. The reversal of 223890863 is 368098322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 223890863 - 2⁸ = 223890607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223890863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223890883) 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, 15992198 + ... + 15992211.

It is an arithmetic number, because the mean of its divisors is an integer number (63968820).

Almost surely, 2^223890863 is an apocalyptic number.

223890863 is a deficient number, since it is larger than the sum of its proper divisors (31984417).

223890863 is an equidigital number, since it uses as much as digits as its factorization.

223890863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31984416.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 223890863 is about 14962.9830916165. The cubic root of 223890863 is about 607.2191461468.

The spelling of 223890863 in words is "two hundred twenty-three million, eight hundred ninety thousand, eight hundred sixty-three".