2217249309 has 32 divisors (see below), whose sum is σ = 3323473920. Its totient is φ = 1303041600.

The previous prime is 2217249269. The next prime is 2217249341. The reversal of 2217249309 is 9039427122.

It is not a de Polignac number, because 2217249309 - 2⁹ = 2217248797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217249109) 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 31 ways as a sum of consecutive naturals, for example, 376812 + ... + 382650.

It is an arithmetic number, because the mean of its divisors is an integer number (103858560).

Almost surely, 2^2217249309 is an apocalyptic number.

It is an amenable number.

2217249309 is a deficient number, since it is larger than the sum of its proper divisors (1106224611).

2217249309 is a wasteful number, since it uses less digits than its factorization.

2217249309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6201.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 2217249309 is about 47087.6768273823. The cubic root of 2217249309 is about 1303.9817385266.

The spelling of 2217249309 in words is "two billion, two hundred seventeen million, two hundred forty-nine thousand, three hundred nine".