1284449071 has 16 divisors (see below), whose sum is σ = 1356759040. Its totient is φ = 1214403840.

The previous prime is 1284449069. The next prime is 1284449129. The reversal of 1284449071 is 1709444821.

It is a cyclic number.

It is not a de Polignac number, because 1284449071 - 2¹ = 1284449069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284449021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234850 + ... + 240256.

It is an arithmetic number, because the mean of its divisors is an integer number (84797440).

Almost surely, 2^1284449071 is an apocalyptic number.

1284449071 is a deficient number, since it is larger than the sum of its proper divisors (72309969).

1284449071 is an equidigital number, since it uses as much as digits as its factorization.

1284449071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1284449071 is about 35839.2113613009. The cubic root of 1284449071 is about 1087.0235749210.

The spelling of 1284449071 in words is "one billion, two hundred eighty-four million, four hundred forty-nine thousand, seventy-one".