1284447486 has 96 divisors (see below), whose sum is σ = 3057512832. Its totient is φ = 358585920.

The previous prime is 1284447469. The next prime is 1284447509. The reversal of 1284447486 is 6847444821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3880341 + ... + 3880671.

It is an arithmetic number, because the mean of its divisors is an integer number (31849092).

Almost surely, 2^1284447486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284447486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528756416).

1284447486 is an abundant number, since it is smaller than the sum of its proper divisors (1773065346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1284447486 is a wasteful number, since it uses less digits than its factorization.

1284447486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 607 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 48.

The square root of 1284447486 is about 35839.1892486423. The cubic root of 1284447486 is about 1087.0231277947.

The spelling of 1284447486 in words is "one billion, two hundred eighty-four million, four hundred forty-seven thousand, four hundred eighty-six".