1284479 has 4 divisors (see below), whose sum is σ = 1467984. Its totient is φ = 1100976.

The previous prime is 1284473. The next prime is 1284487. The reversal of 1284479 is 9744821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9744821 = 71 ⋅137251.

It is a cyclic number.

It is not a de Polignac number, because 1284479 - 2⁸ = 1284223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284473) 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, 91742 + ... + 91755.

It is an arithmetic number, because the mean of its divisors is an integer number (366996).

2^1284479 is an apocalyptic number.

1284479 is a deficient number, since it is larger than the sum of its proper divisors (183505).

1284479 is an equidigital number, since it uses as much as digits as its factorization.

1284479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183504.

The product of its digits is 16128, while the sum is 35.

The square root of 1284479 is about 1133.3485783288. The cubic root of 1284479 is about 108.7032017782.

The spelling of 1284479 in words is "one million, two hundred eighty-four thousand, four hundred seventy-nine".