274747139 has 2 divisors, whose sum is σ = 274747140. Its totient is φ = 274747138.

The previous prime is 274747103. The next prime is 274747147. The reversal of 274747139 is 931747472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274747139 - 2⁸ = 274746883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 274747139.

It is not a weakly prime, because it can be changed into another prime (274747439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137373569 + 137373570.

It is an arithmetic number, because the mean of its divisors is an integer number (137373570).

Almost surely, 2^274747139 is an apocalyptic number.

274747139 is a deficient number, since it is larger than the sum of its proper divisors (1).

274747139 is an equidigital number, since it uses as much as digits as its factorization.

274747139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 274747139 is about 16575.4981523935. The cubic root of 274747139 is about 650.0963478481.

The spelling of 274747139 in words is "two hundred seventy-four million, seven hundred forty-seven thousand, one hundred thirty-nine".