281479 has 4 divisors (see below), whose sum is σ = 307080. Its totient is φ = 255880.

The previous prime is 281431. The next prime is 281509. The reversal of 281479 is 974182.

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

It is a cyclic number.

It is not a de Polignac number, because 281479 - 2⁹ = 280967 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281419) 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, 12784 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (76770).

2²⁸¹⁴⁷⁹ is an apocalyptic number.

281479 is a deficient number, since it is larger than the sum of its proper divisors (25601).

281479 is a wasteful number, since it uses less digits than its factorization.

281479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25600.

The product of its digits is 4032, while the sum is 31.

The square root of 281479 is about 530.5459452300. The cubic root of 281479 is about 65.5363122469.

The spelling of 281479 in words is "two hundred eighty-one thousand, four hundred seventy-nine".