223389729 has 24 divisors (see below), whose sum is σ = 326077440. Its totient is φ = 147366432.

The previous prime is 223389701. The next prime is 223389743. The reversal of 223389729 is 927983322.

It is not a de Polignac number, because 223389729 - 2¹² = 223385633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (223389029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 583072 + ... + 583454.

It is an arithmetic number, because the mean of its divisors is an integer number (13586560).

Almost surely, 2^223389729 is an apocalyptic number.

It is an amenable number.

223389729 is a deficient number, since it is larger than the sum of its proper divisors (102687711).

223389729 is a wasteful number, since it uses less digits than its factorization.

223389729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 898 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 223389729 is about 14946.2279187760. The cubic root of 223389729 is about 606.7657623348.

The spelling of 223389729 in words is "two hundred twenty-three million, three hundred eighty-nine thousand, seven hundred twenty-nine".