1284473 has 2 divisors, whose sum is σ = 1284474. Its totient is φ = 1284472.

The previous prime is 1284467. The next prime is 1284487. The reversal of 1284473 is 3744821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283689 + 784 = 1133^2 + 28^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284473 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1284433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642236 + 642237.

It is an arithmetic number, because the mean of its divisors is an integer number (642237).

2^1284473 is an apocalyptic number.

It is an amenable number.

1284473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284473 is an equidigital number, since it uses as much as digits as its factorization.

1284473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 29.

The square root of 1284473 is about 1133.3459313025. The cubic root of 1284473 is about 108.7030325215.

The spelling of 1284473 in words is "one million, two hundred eighty-four thousand, four hundred seventy-three".