279407 has 2 divisors, whose sum is σ = 279408. Its totient is φ = 279406.

The previous prime is 279397. The next prime is 279413. The reversal of 279407 is 704972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279407 - 2¹⁴ = 263023 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁵ + 7³ + 4⁹ + 9² + 0 + 7⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 279407.

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 279407.

It is not a weakly prime, because it can be changed into another prime (279007) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139703 + 139704.

It is an arithmetic number, because the mean of its divisors is an integer number (139704).

2²⁷⁹⁴⁰⁷ is an apocalyptic number.

279407 is a deficient number, since it is larger than the sum of its proper divisors (1).

279407 is an equidigital number, since it uses as much as digits as its factorization.

279407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 279407 is about 528.5896328911. The cubic root of 279407 is about 65.3751092204.

Subtracting from 279407 its sum of digits (29), we obtain a triangular number (279378 = T₇₄₇).

It can be divided in two parts, 279 and 407, that added together give a palindrome (686).

The spelling of 279407 in words is "two hundred seventy-nine thousand, four hundred seven".