223729247 has 6 divisors (see below), whose sum is σ = 260256528. Its totient is φ = 191767884.

The previous prime is 223729223. The next prime is 223729279. The reversal of 223729247 is 742927322.

It is not a de Polignac number, because 223729247 - 2⁸ = 223728991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 223729247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223729547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2282903 + ... + 2283000.

It is an arithmetic number, because the mean of its divisors is an integer number (43376088).

Almost surely, 2^223729247 is an apocalyptic number.

223729247 is a deficient number, since it is larger than the sum of its proper divisors (36527281).

223729247 is an equidigital number, since it uses as much as digits as its factorization.

223729247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565917 (or 4565910 counting only the distinct ones).

The product of its digits is 84672, while the sum is 38.

The square root of 223729247 is about 14957.5815892811. The cubic root of 223729247 is about 607.0730035858.

The spelling of 223729247 in words is "two hundred twenty-three million, seven hundred twenty-nine thousand, two hundred forty-seven".