1986344 has 8 divisors (see below), whose sum is σ = 3724410. Its totient is φ = 993168.

The previous prime is 1986337. The next prime is 1986359. The reversal of 1986344 is 4436891.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 925444 = 1030^2 + 962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124139 + ... + 124154.

2^1986344 is an apocalyptic number.

It is an amenable number.

1986344 is a deficient number, since it is larger than the sum of its proper divisors (1738066).

1986344 is a wasteful number, since it uses less digits than its factorization.

1986344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248299 (or 248295 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1986344 is about 1409.3771674041. The cubic root of 1986344 is about 125.7046918102.

The spelling of 1986344 in words is "one million, nine hundred eighty-six thousand, three hundred forty-four".