209830319 has 8 divisors (see below), whose sum is σ = 221086080. Its totient is φ = 198595800.

The previous prime is 209830279. The next prime is 209830321. The reversal of 209830319 is 913038902.

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-209830319 is a prime.

It is a super-2 number, since 2×209830319² = 88057525543283522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209830349) 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, 17534 + ... + 26964.

It is an arithmetic number, because the mean of its divisors is an integer number (27635760).

Almost surely, 2^209830319 is an apocalyptic number.

209830319 is a deficient number, since it is larger than the sum of its proper divisors (11255761).

209830319 is a wasteful number, since it uses less digits than its factorization.

209830319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10621.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 209830319 is about 14485.5210123765. The cubic root of 209830319 is about 594.2320615642.

The spelling of 209830319 in words is "two hundred nine million, eight hundred thirty thousand, three hundred nineteen".