223947129 has 32 divisors (see below), whose sum is σ = 362465280. Its totient is φ = 120137472.

The previous prime is 223947121. The next prime is 223947133. The reversal of 223947129 is 921749322.

It is not a de Polignac number, because 223947129 - 2³ = 223947121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223947121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42604 + ... + 47570.

It is an arithmetic number, because the mean of its divisors is an integer number (11327040).

Almost surely, 2^223947129 is an apocalyptic number.

It is an amenable number.

223947129 is a deficient number, since it is larger than the sum of its proper divisors (138518151).

223947129 is a wasteful number, since it uses less digits than its factorization.

223947129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109.

The product of its digits is 54432, while the sum is 39.

The square root of 223947129 is about 14964.8631467180. The cubic root of 223947129 is about 607.2700086226.

The spelling of 223947129 in words is "two hundred twenty-three million, nine hundred forty-seven thousand, one hundred twenty-nine".