274279139 has 4 divisors (see below), whose sum is σ = 290413224. Its totient is φ = 258145056.

The previous prime is 274279127. The next prime is 274279147. The reversal of 274279139 is 931972472.

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 274279139 - 2⁴ = 274279123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 274279139.

It is not an unprimeable number, because it can be changed into a prime (274279939) 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, 8067017 + ... + 8067050.

It is an arithmetic number, because the mean of its divisors is an integer number (72603306).

Almost surely, 2^274279139 is an apocalyptic number.

274279139 is a deficient number, since it is larger than the sum of its proper divisors (16134085).

274279139 is a wasteful number, since it uses less digits than its factorization.

274279139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16134084.

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

The square root of 274279139 is about 16561.3749127299. The cubic root of 274279139 is about 649.7270167310.

The spelling of 274279139 in words is "two hundred seventy-four million, two hundred seventy-nine thousand, one hundred thirty-nine".