274938139 has 4 divisors (see below), whose sum is σ = 314215024. Its totient is φ = 235661256.

The previous prime is 274938137. The next prime is 274938143. The reversal of 274938139 is 931839472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 274938139 - 2¹ = 274938137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274938137) 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 in 3 ways as a sum of consecutive naturals, for example, 19638432 + ... + 19638445.

It is an arithmetic number, because the mean of its divisors is an integer number (78553756).

Almost surely, 2^274938139 is an apocalyptic number.

274938139 is a deficient number, since it is larger than the sum of its proper divisors (39276885).

274938139 is an equidigital number, since it uses as much as digits as its factorization.

274938139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39276884.

The product of its digits is 326592, while the sum is 46.

The square root of 274938139 is about 16581.2586675439. The cubic root of 274938139 is about 650.2469586250.

The spelling of 274938139 in words is "two hundred seventy-four million, nine hundred thirty-eight thousand, one hundred thirty-nine".