276408497 has 2 divisors, whose sum is σ = 276408498. Its totient is φ = 276408496.

The previous prime is 276408481. The next prime is 276408553. The reversal of 276408497 is 794804672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274101136 + 2307361 = 16556^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 276408497 - 2⁴ = 276408481 is a prime.

It is a super-3 number, since 3×276408497³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (276408437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138204248 + 138204249.

It is an arithmetic number, because the mean of its divisors is an integer number (138204249).

Almost surely, 2^276408497 is an apocalyptic number.

It is an amenable number.

276408497 is a deficient number, since it is larger than the sum of its proper divisors (1).

276408497 is an equidigital number, since it uses as much as digits as its factorization.

276408497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 276408497 is about 16625.5374950706. The cubic root of 276408497 is about 651.4040631283.

The spelling of 276408497 in words is "two hundred seventy-six million, four hundred eight thousand, four hundred ninety-seven".