223434729 has 12 divisors (see below), whose sum is σ = 368844736. Its totient is φ = 127676952.

The previous prime is 223434727. The next prime is 223434733. The reversal of 223434729 is 927434322.

It is a happy number.

It is not a de Polignac number, because 223434729 - 2¹ = 223434727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223434693 and 223434702.

It is not an unprimeable number, because it can be changed into a prime (223434721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1773229 + ... + 1773354.

Almost surely, 2^223434729 is an apocalyptic number.

It is an amenable number.

223434729 is a deficient number, since it is larger than the sum of its proper divisors (145410007).

223434729 is a wasteful number, since it uses less digits than its factorization.

223434729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546596 (or 3546593 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 223434729 is about 14947.7332395250. The cubic root of 223434729 is about 606.8065022355.

It can be divided in two parts, 22343 and 4729, that added together give a palindrome (27072).

The spelling of 223434729 in words is "two hundred twenty-three million, four hundred thirty-four thousand, seven hundred twenty-nine".