274943789 has 2 divisors, whose sum is σ = 274943790. Its totient is φ = 274943788.

The previous prime is 274943741. The next prime is 274943791. The reversal of 274943789 is 987349472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257345764 + 17598025 = 16042^2 + 4195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-274943789 is a prime.

Together with 274943791, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 274943789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274940789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137471894 + 137471895.

It is an arithmetic number, because the mean of its divisors is an integer number (137471895).

Almost surely, 2^274943789 is an apocalyptic number.

It is an amenable number.

274943789 is a deficient number, since it is larger than the sum of its proper divisors (1).

274943789 is an equidigital number, since it uses as much as digits as its factorization.

274943789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 274943789 is about 16581.4290397420. The cubic root of 274943789 is about 650.2514128029.

The spelling of 274943789 in words is "two hundred seventy-four million, nine hundred forty-three thousand, seven hundred eighty-nine".