223956129 has 16 divisors (see below), whose sum is σ = 315100800. Its totient is φ = 141204096.

The previous prime is 223956127. The next prime is 223956133. The reversal of 223956129 is 921659322.

It is not a de Polignac number, because 223956129 - 2¹ = 223956127 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223956127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12094 + ... + 24375.

It is an arithmetic number, because the mean of its divisors is an integer number (19693800).

Almost surely, 2^223956129 is an apocalyptic number.

It is an amenable number.

223956129 is a deficient number, since it is larger than the sum of its proper divisors (91144671).

223956129 is a wasteful number, since it uses less digits than its factorization.

223956129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36584.

The product of its digits is 58320, while the sum is 39.

The square root of 223956129 is about 14965.1638480840. The cubic root of 223956129 is about 607.2781435142.

The spelling of 223956129 in words is "two hundred twenty-three million, nine hundred fifty-six thousand, one hundred twenty-nine".