276990229 has 2 divisors, whose sum is σ = 276990230. Its totient is φ = 276990228.

The previous prime is 276990209. The next prime is 276990257. The reversal of 276990229 is 922099672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230341329 + 46648900 = 15177^2 + 6830^2 .

It is a cyclic number.

It is not a de Polignac number, because 276990229 - 2⁷ = 276990101 is a prime.

It is a super-2 number, since 2×276990229² = 153447173922944882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276990209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138495114 + 138495115.

It is an arithmetic number, because the mean of its divisors is an integer number (138495115).

Almost surely, 2^276990229 is an apocalyptic number.

It is an amenable number.

276990229 is a deficient number, since it is larger than the sum of its proper divisors (1).

276990229 is an equidigital number, since it uses as much as digits as its factorization.

276990229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 276990229 is about 16643.0234332588. The cubic root of 276990229 is about 651.8607266787.

The spelling of 276990229 in words is "two hundred seventy-six million, nine hundred ninety thousand, two hundred twenty-nine".