279340881 has 8 divisors (see below), whose sum is σ = 380379264. Its totient is φ = 182264880.

The previous prime is 279340843. The next prime is 279340903. The reversal of 279340881 is 188043972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 279340881 - 2¹⁰ = 279339857 is a prime.

It is a super-2 number, since 2×279340881² = 156062655595712322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (279340801) 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 7 ways as a sum of consecutive naturals, for example, 990430 + ... + 990711.

It is an arithmetic number, because the mean of its divisors is an integer number (47547408).

Almost surely, 2^279340881 is an apocalyptic number.

It is an amenable number.

279340881 is a deficient number, since it is larger than the sum of its proper divisors (101038383).

279340881 is a wasteful number, since it uses less digits than its factorization.

279340881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1981191.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 279340881 is about 16713.4939794168. The cubic root of 279340881 is about 653.6995201503.

The spelling of 279340881 in words is "two hundred seventy-nine million, three hundred forty thousand, eight hundred eighty-one".