2249607809 has 4 divisors (see below), whose sum is σ = 2368008240. Its totient is φ = 2131207380.

The previous prime is 2249607797. The next prime is 2249607827. The reversal of 2249607809 is 9087069422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9087069422 = 2 ⋅4543534711.

It is a cyclic number.

It is not a de Polignac number, because 2249607809 - 2⁴ = 2249607793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2249607839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59200187 + ... + 59200224.

It is an arithmetic number, because the mean of its divisors is an integer number (592002060).

Almost surely, 2^2249607809 is an apocalyptic number.

It is an amenable number.

2249607809 is a deficient number, since it is larger than the sum of its proper divisors (118400431).

2249607809 is a wasteful number, since it uses less digits than its factorization.

2249607809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118400430.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2249607809 is about 47430.0306662351. The cubic root of 2249607809 is about 1310.2945570368.

The spelling of 2249607809 in words is "two billion, two hundred forty-nine million, six hundred seven thousand, eight hundred nine".