274945949 has 2 divisors, whose sum is σ = 274945950. Its totient is φ = 274945948.

The previous prime is 274945943. The next prime is 274945963. The reversal of 274945949 is 949549472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272481049 + 2464900 = 16507^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 274945949 - 2¹² = 274941853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 274945949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274945943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137472974 + 137472975.

It is an arithmetic number, because the mean of its divisors is an integer number (137472975).

Almost surely, 2^274945949 is an apocalyptic number.

It is an amenable number.

274945949 is a deficient number, since it is larger than the sum of its proper divisors (1).

274945949 is an equidigital number, since it uses as much as digits as its factorization.

274945949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The square root of 274945949 is about 16581.4941727216. The cubic root of 274945949 is about 650.2531156230.

The spelling of 274945949 in words is "two hundred seventy-four million, nine hundred forty-five thousand, nine hundred forty-nine".