2109249 has 6 divisors (see below), whose sum is σ = 3046706. Its totient is φ = 1406160.

The previous prime is 2109223. The next prime is 2109253. The reversal of 2109249 is 9429012.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 129600 = 1407^2 + 360^2 .

It is not a de Polignac number, because 2109249 - 2⁸ = 2108993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2109269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117172 + ... + 117189.

2^2109249 is an apocalyptic number.

It is an amenable number.

2109249 is a deficient number, since it is larger than the sum of its proper divisors (937457).

2109249 is a wasteful number, since it uses less digits than its factorization.

2109249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234367 (or 234364 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2109249 is about 1452.3253767665. The cubic root of 2109249 is about 128.2456423858.

The spelling of 2109249 in words is "two million, one hundred nine thousand, two hundred forty-nine".