2009192 has 8 divisors (see below), whose sum is σ = 3767250.
Its totient is φ = 1004592.
The previous prime is 2009191. The next prime is 2009209. The reversal of 2009192 is 2919002.
It can be written as a sum of positive squares in only one way, i.e., 1359556 + 649636 = 1166^2 + 806^2
It is a tau number, because it is divible by the number of its divisors (8).
It is not an unprimeable number, because it can be changed into a prime (2009191) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125567 + ... + 125582.
22009192 is an apocalyptic number.
It is an amenable number.
2009192 is a deficient number, since it is larger than the sum of its proper divisors (1758058).
2009192 is a wasteful number, since it uses less digits than its factorization.
2009192 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 251155 (or 251151 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 23.
The square root of 2009192 is about 1417.4596996035.
The cubic root of 2009192 is about 126.1848299406.
The spelling of 2009192 in words is "two million, nine thousand, one hundred ninety-two".