2009290 has 8 divisors (see below), whose sum is σ = 3616740. Its totient is φ = 803712.

The previous prime is 2009251. The next prime is 2009299. The reversal of 2009290 is 929002.

It can be written as a sum of positive squares in 2 ways, for example, as 1846881 + 162409 = 1359^2 + 403^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2009299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100455 + ... + 100474.

2^2009290 is an apocalyptic number.

2009290 is a deficient number, since it is larger than the sum of its proper divisors (1607450).

2009290 is a wasteful number, since it uses less digits than its factorization.

2009290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200936.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2009290 is about 1417.4942680660. The cubic root of 2009290 is about 126.1868814970.

The spelling of 2009290 in words is "two million, nine thousand, two hundred ninety".