274842839 has 4 divisors (see below), whose sum is σ = 276022656. Its totient is φ = 273663024.

The previous prime is 274842779. The next prime is 274842857. The reversal of 274842839 is 938248472.

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 274842839 - 2¹⁶ = 274777303 is a prime.

It is a super-2 number, since 2×274842839² = 151077172299159842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274842793 and 274842802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274842899) 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, 589559 + ... + 590024.

It is an arithmetic number, because the mean of its divisors is an integer number (69005664).

Almost surely, 2^274842839 is an apocalyptic number.

274842839 is a deficient number, since it is larger than the sum of its proper divisors (1179817).

274842839 is a wasteful number, since it uses less digits than its factorization.

274842839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179816.

The product of its digits is 774144, while the sum is 47.

The square root of 274842839 is about 16578.3846921225. The cubic root of 274842839 is about 650.1718196663.

The spelling of 274842839 in words is "two hundred seventy-four million, eight hundred forty-two thousand, eight hundred thirty-nine".