983997 has 12 divisors (see below), whose sum is σ = 1624480. Its totient is φ = 562248.

The previous prime is 983993. The next prime is 984007. The reversal of 983997 is 799389.

It is a happy number.

It is not a de Polignac number, because 983997 - 2² = 983993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7747 + ... + 7872.

2⁹⁸³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

983997 is a deficient number, since it is larger than the sum of its proper divisors (640483).

983997 is a wasteful number, since it uses less digits than its factorization.

983997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15632 (or 15629 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 983997 is about 991.9662292639. The cubic root of 983997 is about 99.4636955842.

It can be divided in two parts, 98 and 3997, that added together give a triangular number (4095 = T₉₀).

The spelling of 983997 in words is "nine hundred eighty-three thousand, nine hundred ninety-seven".