276447449 has 2 divisors, whose sum is σ = 276447450. Its totient is φ = 276447448.

The previous prime is 276447433. The next prime is 276447463. The reversal of 276447449 is 944744672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199007449 + 77440000 = 14107^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 276447449 - 2⁴ = 276447433 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (276447469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138223724 + 138223725.

It is an arithmetic number, because the mean of its divisors is an integer number (138223725).

Almost surely, 2^276447449 is an apocalyptic number.

It is an amenable number.

276447449 is a deficient number, since it is larger than the sum of its proper divisors (1).

276447449 is an equidigital number, since it uses as much as digits as its factorization.

276447449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 47.

The square root of 276447449 is about 16626.7089046510. The cubic root of 276447449 is about 651.4346607155.

The spelling of 276447449 in words is "two hundred seventy-six million, four hundred forty-seven thousand, four hundred forty-nine".