2509299 has 20 divisors (see below), whose sum is σ = 4038496. Its totient is φ = 1543536.

The previous prime is 2509279. The next prime is 2509301. The reversal of 2509299 is 9929052.

It is not a de Polignac number, because 2509299 - 2⁵ = 2509267 is a prime.

It is a Duffinian number.

2509299 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139 + ... + 2244.

2^2509299 is an apocalyptic number.

2509299 is a deficient number, since it is larger than the sum of its proper divisors (1529197).

2509299 is a wasteful number, since it uses less digits than its factorization.

2509299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 2509299 is about 1584.0767026884. The cubic root of 2509299 is about 135.8889484164. Note that the first 3 decimals are identical.

The spelling of 2509299 in words is "two million, five hundred nine thousand, two hundred ninety-nine".