279120085 has 16 divisors (see below), whose sum is σ = 337906800. Its totient is φ = 221331456.

The previous prime is 279120047. The next prime is 279120113. The reversal of 279120085 is 580021972.

It can be written as a sum of positive squares in 8 ways, for example, as 5349969 + 273770116 = 2313^2 + 16546^2 .

It is a cyclic number.

It is not a de Polignac number, because 279120085 - 2⁹ = 279119573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 279120085.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 362581 + ... + 363349.

It is an arithmetic number, because the mean of its divisors is an integer number (21119175).

Almost surely, 2^279120085 is an apocalyptic number.

It is an amenable number.

279120085 is a deficient number, since it is larger than the sum of its proper divisors (58786715).

279120085 is a wasteful number, since it uses less digits than its factorization.

279120085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 279120085 is about 16706.8873522269. The cubic root of 279120085 is about 653.5272428434.

The spelling of 279120085 in words is "two hundred seventy-nine million, one hundred twenty thousand, eighty-five".