2209538 has 4 divisors (see below), whose sum is σ = 3314310. Its totient is φ = 1104768.

The previous prime is 2209523. The next prime is 2209547. The reversal of 2209538 is 8359022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 69169 = 1463^2 + 263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2209538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552383 + ... + 552386.

2^2209538 is an apocalyptic number.

2209538 is a deficient number, since it is larger than the sum of its proper divisors (1104772).

2209538 is a wasteful number, since it uses less digits than its factorization.

2209538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104771.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2209538 is about 1486.4514791947. The cubic root of 2209538 is about 130.2468288838.

The spelling of 2209538 in words is "two million, two hundred nine thousand, five hundred thirty-eight".