209080829 has 4 divisors (see below), whose sum is σ = 209153280. Its totient is φ = 209008380.

The previous prime is 209080819. The next prime is 209080831. The reversal of 209080829 is 928080902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 209080829 - 2¹⁶ = 209015293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209080792 and 209080801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209080819) 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, 31709 + ... + 37730.

It is an arithmetic number, because the mean of its divisors is an integer number (52288320).

Almost surely, 2^209080829 is an apocalyptic number.

It is an amenable number.

209080829 is a deficient number, since it is larger than the sum of its proper divisors (72451).

209080829 is an equidigital number, since it uses as much as digits as its factorization.

209080829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72450.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 209080829 is about 14459.6275539863. The cubic root of 209080829 is about 593.5237077601.

The spelling of 209080829 in words is "two hundred nine million, eighty thousand, eight hundred twenty-nine".