2509099 has 4 divisors (see below), whose sum is σ = 2535064. Its totient is φ = 2483136.

The previous prime is 2509079. The next prime is 2509103. The reversal of 2509099 is 9909052.

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

It is a cyclic number.

It is not a de Polignac number, because 2509099 - 2⁷ = 2508971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12837 + ... + 13030.

It is an arithmetic number, because the mean of its divisors is an integer number (633766).

2^2509099 is an apocalyptic number.

2509099 is a deficient number, since it is larger than the sum of its proper divisors (25965).

2509099 is an equidigital number, since it uses as much as digits as its factorization.

2509099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25964.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 2509099 is about 1584.0135731742. The cubic root of 2509099 is about 135.8853380440.

The spelling of 2509099 in words is "two million, five hundred nine thousand, ninety-nine".