2492209 has 8 divisors (see below), whose sum is σ = 2580200. Its totient is φ = 2405376.

The previous prime is 2492201. The next prime is 2492227. The reversal of 2492209 is 9022942.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 810000 + 1682209 = 900^2 + 1297^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2492209 - 2³ = 2492201 is a prime.

It is a super-2 number, since 2×2492209² = 12422211399362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2492201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6967 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (322525).

2^2492209 is an apocalyptic number.

It is an amenable number.

2492209 is a deficient number, since it is larger than the sum of its proper divisors (87991).

2492209 is a wasteful number, since it uses less digits than its factorization.

2492209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2492209 is about 1578.6731770699. The cubic root of 2492209 is about 135.5797472675.

It can be divided in two parts, 2492 and 209, that added together give a triangular number (2701 = T₇₃).

The spelling of 2492209 in words is "two million, four hundred ninety-two thousand, two hundred nine".