276949249 has 2 divisors, whose sum is σ = 276949250. Its totient is φ = 276949248.

The previous prime is 276949243. The next prime is 276949291. The reversal of 276949249 is 942949672.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180418624 + 96530625 = 13432^2 + 9825^2 .

It is a cyclic number.

It is not a de Polignac number, because 276949249 - 2³ = 276949241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 276949196 and 276949205.

It is not a weakly prime, because it can be changed into another prime (276949241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138474624 + 138474625.

It is an arithmetic number, because the mean of its divisors is an integer number (138474625).

Almost surely, 2^276949249 is an apocalyptic number.

It is an amenable number.

276949249 is a deficient number, since it is larger than the sum of its proper divisors (1).

276949249 is an equidigital number, since it uses as much as digits as its factorization.

276949249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 276949249 is about 16641.7922412221. The cubic root of 276949249 is about 651.8285780476.

The spelling of 276949249 in words is "two hundred seventy-six million, nine hundred forty-nine thousand, two hundred forty-nine".