274139729 has 2 divisors, whose sum is σ = 274139730. Its totient is φ = 274139728.

The previous prime is 274139713. The next prime is 274139743. The reversal of 274139729 is 927931472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140968129 + 133171600 = 11873^2 + 11540^2 .

It is a cyclic number.

It is not a de Polignac number, because 274139729 - 2⁴ = 274139713 is a prime.

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 274139729.

It is not a weakly prime, because it can be changed into another prime (274139629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137069864 + 137069865.

It is an arithmetic number, because the mean of its divisors is an integer number (137069865).

Almost surely, 2^274139729 is an apocalyptic number.

It is an amenable number.

274139729 is a deficient number, since it is larger than the sum of its proper divisors (1).

274139729 is an equidigital number, since it uses as much as digits as its factorization.

274139729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 274139729 is about 16557.1654880900. The cubic root of 274139729 is about 649.6169174670.

The spelling of 274139729 in words is "two hundred seventy-four million, one hundred thirty-nine thousand, seven hundred twenty-nine".