223454309 has 16 divisors (see below), whose sum is σ = 254257920. Its totient is φ = 194900160.

The previous prime is 223454281. The next prime is 223454321. The reversal of 223454309 is 903454322.

It is a de Polignac number, because none of the positive numbers 2^k-223454309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223454369) 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, 11414 + ... + 24024.

It is an arithmetic number, because the mean of its divisors is an integer number (15891120).

Almost surely, 2^223454309 is an apocalyptic number.

223454309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

223454309 is a deficient number, since it is larger than the sum of its proper divisors (30803611).

223454309 is a wasteful number, since it uses less digits than its factorization.

223454309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12700.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 223454309 is about 14948.3881739805. The cubic root of 223454309 is about 606.8242269111.

The spelling of 223454309 in words is "two hundred twenty-three million, four hundred fifty-four thousand, three hundred nine".