276989449 has 27 divisors (see below), whose sum is σ = 327097141. Its totient is φ = 234333440.

The previous prime is 276989443. The next prime is 276989459. The reversal of 276989449 is 944989672.

The square root of 276989449 is 16643.

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 366025 + 276623424 = 605^2 + 16632^2 .

It is not a de Polignac number, because 276989449 - 2³ = 276989441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 276989393 and 276989402.

It is not an unprimeable number, because it can be changed into a prime (276989441) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3112197 + ... + 3112285.

Almost surely, 2^276989449 is an apocalyptic number.

276989449 is the 16643-rd square number.

276989449 is the 8322-nd centered octagonal number.

It is an amenable number.

276989449 is a deficient number, since it is larger than the sum of its proper divisors (50107692).

276989449 is an equidigital number, since it uses as much as digits as its factorization.

276989449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 117 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The cubic root of 276989449 is about 651.8601148017.

The spelling of 276989449 in words is "two hundred seventy-six million, nine hundred eighty-nine thousand, four hundred forty-nine".