209900453 has 8 divisors (see below), whose sum is σ = 239974272. Its totient is φ = 179848656.

The previous prime is 209900447. The next prime is 209900491. The reversal of 209900453 is 354009902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209900453 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 (209900413) 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 7 ways as a sum of consecutive naturals, for example, 31751 + ... + 37787.

It is an arithmetic number, because the mean of its divisors is an integer number (29996784).

Almost surely, 2^209900453 is an apocalyptic number.

It is an amenable number.

209900453 is a deficient number, since it is larger than the sum of its proper divisors (30073819).

209900453 is an equidigital number, since it uses as much as digits as its factorization.

209900453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 209900453 is about 14487.9416412408. The cubic root of 209900453 is about 594.2982598607.

The spelling of 209900453 in words is "two hundred nine million, nine hundred thousand, four hundred fifty-three".