223038947 has 4 divisors (see below), whose sum is σ = 223103376. Its totient is φ = 222974520.

The previous prime is 223038919. The next prime is 223039049. The reversal of 223038947 is 749830322.

It is a happy number.

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 223038947 - 2²⁰ = 221990371 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 223038947.

It is not an unprimeable number, because it can be changed into a prime (223038917) 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, 26708 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (55775844).

Almost surely, 2^223038947 is an apocalyptic number.

223038947 is a deficient number, since it is larger than the sum of its proper divisors (64429).

223038947 is an equidigital number, since it uses as much as digits as its factorization.

223038947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64428.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 223038947 is about 14934.4885081478. The cubic root of 223038947 is about 606.4480007670.

The spelling of 223038947 in words is "two hundred twenty-three million, thirty-eight thousand, nine hundred forty-seven".