276972089 has 2 divisors, whose sum is σ = 276972090. Its totient is φ = 276972088.

The previous prime is 276972071. The next prime is 276972103. The reversal of 276972089 is 980279672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161086864 + 115885225 = 12692^2 + 10765^2 .

It is a cyclic number.

It is not a de Polignac number, because 276972089 - 2⁸ = 276971833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (276972029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138486044 + 138486045.

It is an arithmetic number, because the mean of its divisors is an integer number (138486045).

Almost surely, 2^276972089 is an apocalyptic number.

It is an amenable number.

276972089 is a deficient number, since it is larger than the sum of its proper divisors (1).

276972089 is an equidigital number, since it uses as much as digits as its factorization.

276972089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 276972089 is about 16642.4784512404. The cubic root of 276972089 is about 651.8464963191.

The spelling of 276972089 in words is "two hundred seventy-six million, nine hundred seventy-two thousand, eighty-nine".