1983969 has 24 divisors (see below), whose sum is σ = 3191552. Its totient is φ = 1179360.

The previous prime is 1983967. The next prime is 1983979. The reversal of 1983969 is 9693891.

It is not a de Polignac number, because 1983969 - 2¹ = 1983967 is a prime.

It is a super-2 number, since 2×1983969² = 7872265985922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1983967) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3354 + ... + 3900.

2^1983969 is an apocalyptic number.

It is an amenable number.

1983969 is a deficient number, since it is larger than the sum of its proper divisors (1207583).

1983969 is a wasteful number, since it uses less digits than its factorization.

1983969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 594 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 1983969 is about 1408.5343446292. The cubic root of 1983969 is about 125.6545716379.

The spelling of 1983969 in words is "one million, nine hundred eighty-three thousand, nine hundred sixty-nine".