427279 has 2 divisors, whose sum is σ = 427280. Its totient is φ = 427278.

The previous prime is 427249. The next prime is 427283. The reversal of 427279 is 972724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427279 - 2⁵ = 427247 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 427279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213639 + 213640.

It is an arithmetic number, because the mean of its divisors is an integer number (213640).

2⁴²⁷²⁷⁹ is an apocalyptic number.

427279 is a deficient number, since it is larger than the sum of its proper divisors (1).

427279 is an equidigital number, since it uses as much as digits as its factorization.

427279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 427279 is about 653.6658167596. The cubic root of 427279 is about 75.3188793285.

The spelling of 427279 in words is "four hundred twenty-seven thousand, two hundred seventy-nine".