1386544 has 20 divisors (see below), whose sum is σ = 2828440. Its totient is φ = 656640.

The previous prime is 1386499. The next prime is 1386551. The reversal of 1386544 is 4456831.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 2584.

It is an arithmetic number, because the mean of its divisors is an integer number (141422).

2^1386544 is an apocalyptic number.

It is an amenable number.

1386544 is an abundant number, since it is smaller than the sum of its proper divisors (1441896).

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

1386544 is a wasteful number, since it uses less digits than its factorization.

1386544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588 (or 4582 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1386544 is about 1177.5160296149. The cubic root of 1386544 is about 111.5093331419.

The spelling of 1386544 in words is "one million, three hundred eighty-six thousand, five hundred forty-four".