273656489 has 2 divisors, whose sum is σ = 273656490. Its totient is φ = 273656488.

The previous prime is 273656447. The next prime is 273656503. The reversal of 273656489 is 984656372.

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., 198105625 + 75550864 = 14075^2 + 8692^2 .

It is a cyclic number.

It is not a de Polignac number, because 273656489 - 2⁸ = 273656233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (273656689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136828244 + 136828245.

It is an arithmetic number, because the mean of its divisors is an integer number (136828245).

Almost surely, 2^273656489 is an apocalyptic number.

It is an amenable number.

273656489 is a deficient number, since it is larger than the sum of its proper divisors (1).

273656489 is an equidigital number, since it uses as much as digits as its factorization.

273656489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 273656489 is about 16542.5659738748. The cubic root of 273656489 is about 649.2349887380.

The spelling of 273656489 in words is "two hundred seventy-three million, six hundred fifty-six thousand, four hundred eighty-nine".