1986944 has 48 divisors (see below), whose sum is σ = 4274820. Its totient is φ = 919296.

The previous prime is 1986923. The next prime is 1986949. The reversal of 1986944 is 4496891.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

Its product of digits (62208) is a multiple of the sum of its prime divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46187 + ... + 46229.

2^1986944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2137410).

1986944 is an abundant number, since it is smaller than the sum of its proper divisors (2287876).

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

1986944 is an equidigital number, since it uses as much as digits as its factorization.

1986944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 64 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 1986944 is about 1409.5900113153. The cubic root of 1986944 is about 125.7173474264.

The spelling of 1986944 in words is "one million, nine hundred eighty-six thousand, nine hundred forty-four".