2219069449 has 15 divisors (see below), whose sum is σ = 2372313153. Its totient is φ = 2075722848.

The previous prime is 2219069387. The next prime is 2219069459. The reversal of 2219069449 is 9449609122.

It is a happy number.

The square root of 2219069449 is 47107.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 688695049 + 1530374400 = 26243^2 + 39120^2 .

It is not a de Polignac number, because 2219069449 - 2⁹ = 2219068937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2219069399 and 2219069408.

It is not an unprimeable number, because it can be changed into a prime (2219069459) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 13613842 + ... + 13614004.

Almost surely, 2^2219069449 is an apocalyptic number.

2219069449 is the 47107-th square number.

2219069449 is the 23554-th centered octagonal number.

It is an amenable number.

2219069449 is a deficient number, since it is larger than the sum of its proper divisors (153243704).

2219069449 is an frugal number, since it uses more digits than its factorization.

2219069449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The cubic root of 2219069449 is about 1304.3384538132.

The spelling of 2219069449 in words is "two billion, two hundred nineteen million, sixty-nine thousand, four hundred forty-nine".