279478 has 4 divisors (see below), whose sum is σ = 419220. Its totient is φ = 139738.

The previous prime is 279451. The next prime is 279479. The reversal of 279478 is 874972.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 12.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 69868 + ... + 69871.

It is an arithmetic number, because the mean of its divisors is an integer number (104805).

2²⁷⁹⁴⁷⁸ is an apocalyptic number.

279478 is a deficient number, since it is larger than the sum of its proper divisors (139742).

279478 is a wasteful number, since it uses less digits than its factorization.

279478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139741.

The product of its digits is 28224, while the sum is 37.

The square root of 279478 is about 528.6567884743. The cubic root of 279478 is about 65.3806462323.

It can be divided in two parts, 279 and 478, that added together give a palindrome (757).

The spelling of 279478 in words is "two hundred seventy-nine thousand, four hundred seventy-eight".