1284079 has 4 divisors (see below), whose sum is σ = 1315440. Its totient is φ = 1252720.

The previous prime is 1284053. The next prime is 1284083. The reversal of 1284079 is 9704821.

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 1284079 - 2⁵ = 1284047 is a prime.

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 1284079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284379) 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, 15619 + ... + 15700.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

2^1284079 is an apocalyptic number.

1284079 is a deficient number, since it is larger than the sum of its proper divisors (31361).

1284079 is an equidigital number, since it uses as much as digits as its factorization.

1284079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31360.

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

The square root of 1284079 is about 1133.1720963737. The cubic root of 1284079 is about 108.6919168409.

The spelling of 1284079 in words is "one million, two hundred eighty-four thousand, seventy-nine".