209009922 has 16 divisors (see below), whose sum is σ = 456021792. Its totient is φ = 63336320.

The previous prime is 209009921. The next prime is 209009939. The reversal of 209009922 is 229900902.

209009922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (209009921) 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, 1583343 + ... + 1583474.

It is an arithmetic number, because the mean of its divisors is an integer number (28501362).

Almost surely, 2^209009922 is an apocalyptic number.

209009922 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

209009922 is an abundant number, since it is smaller than the sum of its proper divisors (247011870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209009922 is a wasteful number, since it uses less digits than its factorization.

209009922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166833.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 209009922 is about 14457.1754502738. The cubic root of 209009922 is about 593.4566049333.

The spelling of 209009922 in words is "two hundred nine million, nine thousand, nine hundred twenty-two".