274944139 has 4 divisors (see below), whose sum is σ = 286898256. Its totient is φ = 262990024.

The previous prime is 274944113. The next prime is 274944149. The reversal of 274944139 is 931449472.

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 274944139 - 2¹¹ = 274942091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274944095 and 274944104.

It is not an unprimeable number, because it can be changed into a prime (274944149) 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 in 3 ways as a sum of consecutive naturals, for example, 5977024 + ... + 5977069.

It is an arithmetic number, because the mean of its divisors is an integer number (71724564).

Almost surely, 2^274944139 is an apocalyptic number.

274944139 is a deficient number, since it is larger than the sum of its proper divisors (11954117).

274944139 is a wasteful number, since it uses less digits than its factorization.

274944139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954116.

The product of its digits is 217728, while the sum is 43.

The square root of 274944139 is about 16581.4395937144. The cubic root of 274944139 is about 650.2516887235.

The spelling of 274944139 in words is "two hundred seventy-four million, nine hundred forty-four thousand, one hundred thirty-nine".