1988944 has 10 divisors (see below), whose sum is σ = 3853610. Its totient is φ = 994464.

The previous prime is 1988941. The next prime is 1988963. The reversal of 1988944 is 4498891.

It can be written as a sum of positive squares in only one way, i.e., 1411344 + 577600 = 1188^2 + 760^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1988944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62139 + ... + 62170.

It is an arithmetic number, because the mean of its divisors is an integer number (385361).

2^1988944 is an apocalyptic number.

It is an amenable number.

1988944 is a deficient number, since it is larger than the sum of its proper divisors (1864666).

1988944 is a wasteful number, since it uses less digits than its factorization.

1988944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124317 (or 124311 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 1988944 is about 1410.2992590227. The cubic root of 1988944 is about 125.7595144225.

The spelling of 1988944 in words is "one million, nine hundred eighty-eight thousand, nine hundred forty-four".