279475 has 12 divisors (see below), whose sum is σ = 396304. Its totient is φ = 191520.

The previous prime is 279451. The next prime is 279479. The reversal of 279475 is 574972.

It is not a de Polignac number, because 279475 - 2⁵ = 279443 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 279475.

It is not an unprimeable number, because it can be changed into a prime (279479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 624 + ... + 973.

2²⁷⁹⁴⁷⁵ is an apocalyptic number.

279475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

279475 is a deficient number, since it is larger than the sum of its proper divisors (116829).

279475 is a wasteful number, since it uses less digits than its factorization.

279475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614 (or 1609 counting only the distinct ones).

The product of its digits is 17640, while the sum is 34.

The square root of 279475 is about 528.6539510871. The cubic root of 279475 is about 65.3804122930.

The spelling of 279475 in words is "two hundred seventy-nine thousand, four hundred seventy-five".