223049405 has 4 divisors (see below), whose sum is σ = 267659292. Its totient is φ = 178439520.

The previous prime is 223049369. The next prime is 223049413. The reversal of 223049405 is 504940322.

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

It can be written as a sum of positive squares in 2 ways, for example, as 90592324 + 132457081 = 9518^2 + 11509^2 .

It is not a de Polignac number, because 223049405 - 2¹² = 223045309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22304936 + ... + 22304945.

It is an arithmetic number, because the mean of its divisors is an integer number (66914823).

Almost surely, 2^223049405 is an apocalyptic number.

It is an amenable number.

223049405 is a deficient number, since it is larger than the sum of its proper divisors (44609887).

223049405 is an equidigital number, since it uses as much as digits as its factorization.

223049405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44609886.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 223049405 is about 14934.8386332093. The cubic root of 223049405 is about 606.4574791326.

Adding to 223049405 its reverse (504940322), we get a palindrome (727989727).

The spelling of 223049405 in words is "two hundred twenty-three million, forty-nine thousand, four hundred five".