1772999449 has 27 divisors (see below), whose sum is σ = 1993068189. Its totient is φ = 1576486080.

The previous prime is 1772999447. The next prime is 1772999467. The reversal of 1772999449 is 9449992771.

The square root of 1772999449 is 42107.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1180953225 + 592046224 = 34365^2 + 24332^2 .

It is not a de Polignac number, because 1772999449 - 2¹ = 1772999447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1772999443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22442992 + ... + 22443070.

Almost surely, 2^1772999449 is an apocalyptic number.

1772999449 is the 42107-th square number.

1772999449 is the 21054-th centered octagonal number.

It is an amenable number.

1772999449 is a deficient number, since it is larger than the sum of its proper divisors (220068740).

1772999449 is an frugal number, since it uses more digits than its factorization.

1772999449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 133 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 61.

The cubic root of 1772999449 is about 1210.3274047427.

The spelling of 1772999449 in words is "one billion, seven hundred seventy-two million, nine hundred ninety-nine thousand, four hundred forty-nine".