1373984 has 12 divisors (see below), whose sum is σ = 2705094. Its totient is φ = 686976.

The previous prime is 1373959. The next prime is 1373989. The reversal of 1373984 is 4893731.

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 400 = 1172^2 + 20^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1373989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21437 + ... + 21500.

2^1373984 is an apocalyptic number.

It is an amenable number.

1373984 is a deficient number, since it is larger than the sum of its proper divisors (1331110).

1373984 is an equidigital number, since it uses as much as digits as its factorization.

1373984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42947 (or 42939 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 1373984 is about 1172.1706360424. The cubic root of 1373984 is about 111.1716091280.

The spelling of 1373984 in words is "one million, three hundred seventy-three thousand, nine hundred eighty-four".