9783997 has 4 divisors (see below), whose sum is σ = 9858816. Its totient is φ = 9709180.

The previous prime is 9783989. The next prime is 9784007. The reversal of 9783997 is 7993879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7993879 = 29 ⋅275651.

It is a cyclic number.

It is not a de Polignac number, because 9783997 - 2³ = 9783989 is a prime.

It is a Duffinian number.

9783997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9783937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37213 + ... + 37474.

It is an arithmetic number, because the mean of its divisors is an integer number (2464704).

Almost surely, 2^9783997 is an apocalyptic number.

It is an amenable number.

9783997 is a deficient number, since it is larger than the sum of its proper divisors (74819).

9783997 is a wasteful number, since it uses less digits than its factorization.

9783997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74818.

The product of its digits is 857304, while the sum is 52.

The square root of 9783997 is about 3127.9381387745. The cubic root of 9783997 is about 213.8809495926.

The spelling of 9783997 in words is "nine million, seven hundred eighty-three thousand, nine hundred ninety-seven".