275663389 has 2 divisors, whose sum is σ = 275663390. Its totient is φ = 275663388.

The previous prime is 275663341. The next prime is 275663407. The reversal of 275663389 is 983366572.

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., 193905625 + 81757764 = 13925^2 + 9042^2 .

It is a cyclic number.

It is not a de Polignac number, because 275663389 - 2¹³ = 275655197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275663489) 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, 137831694 + 137831695.

It is an arithmetic number, because the mean of its divisors is an integer number (137831695).

Almost surely, 2^275663389 is an apocalyptic number.

It is an amenable number.

275663389 is a deficient number, since it is larger than the sum of its proper divisors (1).

275663389 is an equidigital number, since it uses as much as digits as its factorization.

275663389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 49.

The square root of 275663389 is about 16603.1138344589. The cubic root of 275663389 is about 650.8182114287.

The spelling of 275663389 in words is "two hundred seventy-five million, six hundred sixty-three thousand, three hundred eighty-nine".