920209223 has 4 divisors (see below), whose sum is σ = 920501688. Its totient is φ = 919916760.

The previous prime is 920209219. The next prime is 920209247. The reversal of 920209223 is 322902029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920209223 - 2² = 920209219 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 (923209223) 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 3 ways as a sum of consecutive naturals, for example, 141461 + ... + 147822.

It is an arithmetic number, because the mean of its divisors is an integer number (230125422).

Almost surely, 2^920209223 is an apocalyptic number.

920209223 is a deficient number, since it is larger than the sum of its proper divisors (292465).

920209223 is a wasteful number, since it uses less digits than its factorization.

920209223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292464.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 920209223 is about 30334.9505191619. The cubic root of 920209223 is about 972.6625481495.

The spelling of 920209223 in words is "nine hundred twenty million, two hundred nine thousand, two hundred twenty-three".