273997949 has 2 divisors, whose sum is σ = 273997950. Its totient is φ = 273997948.

The previous prime is 273997939. The next prime is 273997973. The reversal of 273997949 is 949799372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234396100 + 39601849 = 15310^2 + 6293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273997949 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 (273997939) 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, 136998974 + 136998975.

It is an arithmetic number, because the mean of its divisors is an integer number (136998975).

Almost surely, 2^273997949 is an apocalyptic number.

It is an amenable number.

273997949 is a deficient number, since it is larger than the sum of its proper divisors (1).

273997949 is an equidigital number, since it uses as much as digits as its factorization.

273997949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7715736, while the sum is 59.

The square root of 273997949 is about 16552.8834044102. The cubic root of 273997949 is about 649.5049082015.

The spelling of 273997949 in words is "two hundred seventy-three million, nine hundred ninety-seven thousand, nine hundred forty-nine".