279426 has 16 divisors (see below), whose sum is σ = 638784. Its totient is φ = 79824.

The previous prime is 279421. The next prime is 279431. The reversal of 279426 is 624972.

It is a happy number.

279426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (279421) and next prime (279431).

It is a d-powerful number, because it can be written as 2⁵ + 7⁴ + 4⁹ + 9⁴ + 2⁹ + 6⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 279393 and 279402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279421) by changing a digit.

279426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3285 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (39924).

279426 is a Friedman number, since it can be written as 6^7+4-2^9-2, using all its digits and the basic arithmetic operations.

2²⁷⁹⁴²⁶ is an apocalyptic number.

279426 is an abundant number, since it is smaller than the sum of its proper divisors (359358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279426 is a wasteful number, since it uses less digits than its factorization.

279426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665.

The product of its digits is 6048, while the sum is 30.

The square root of 279426 is about 528.6076049396. The cubic root of 279426 is about 65.3765910479.

It can be divided in two parts, 27 and 9426, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 279426 in words is "two hundred seventy-nine thousand, four hundred twenty-six".