279404 has 12 divisors (see below), whose sum is σ = 510384. Its totient is φ = 133584.

The previous prime is 279397. The next prime is 279407. The reversal of 279404 is 404972.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 279404.

It is not an unprimeable number, because it can be changed into a prime (279407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427 + ... + 1610.

It is an arithmetic number, because the mean of its divisors is an integer number (42532).

2²⁷⁹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

279404 is a deficient number, since it is larger than the sum of its proper divisors (230980).

279404 is a wasteful number, since it uses less digits than its factorization.

279404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 279404 is about 528.5867951434. The cubic root of 279404 is about 65.3748752415.

Subtracting from 279404 its sum of digits (26), we obtain a triangular number (279378 = T₇₄₇).

The spelling of 279404 in words is "two hundred seventy-nine thousand, four hundred four".