1997384 has 16 divisors (see below), whose sum is σ = 3807420. Its totient is φ = 982080.

The previous prime is 1997351. The next prime is 1997407. The reversal of 1997384 is 4837991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 228484 = 1330^2 + 478^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 1559 + ... + 2534.

2^1997384 is an apocalyptic number.

It is an amenable number.

1997384 is a deficient number, since it is larger than the sum of its proper divisors (1810036).

1997384 is a wasteful number, since it uses less digits than its factorization.

1997384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160 (or 4156 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1997384 is about 1413.2883640645. The cubic root of 1997384 is about 125.9371484637.

The spelling of 1997384 in words is "one million, nine hundred ninety-seven thousand, three hundred eighty-four".