354644223 has 16 divisors (see below), whose sum is σ = 486670560. Its totient is φ = 229550976.

The previous prime is 354644207. The next prime is 354644231. The reversal of 354644223 is 322446453.

It is a Cunningham number, because it is equal to 18832²-1.

It is not a de Polignac number, because 354644223 - 2⁴ = 354644207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354644203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53361 + ... + 59637.

It is an arithmetic number, because the mean of its divisors is an integer number (30416910).

Almost surely, 2^354644223 is an apocalyptic number.

354644223 is a deficient number, since it is larger than the sum of its proper divisors (132026337).

354644223 is a wasteful number, since it uses less digits than its factorization.

354644223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826.

The product of its digits is 69120, while the sum is 33.

The square root of 354644223 is about 18831.9999734494. Note that the first 4 decimals coincide. The cubic root of 354644223 is about 707.8332561617.

The spelling of 354644223 in words is "three hundred fifty-four million, six hundred forty-four thousand, two hundred twenty-three".