983990 has 16 divisors (see below), whose sum is σ = 2024352. Its totient is φ = 337344.

The previous prime is 983987. The next prime is 983993. The reversal of 983990 is 99389.

It is an interprime number because it is at equal distance from previous prime (983987) and next prime (983993).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 983990.

It is not an unprimeable number, because it can be changed into a prime (983993) 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 7 ways as a sum of consecutive naturals, for example, 6959 + ... + 7098.

It is an arithmetic number, because the mean of its divisors is an integer number (126522).

2⁹⁸³⁹⁹⁰ is an apocalyptic number.

983990 is an abundant number, since it is smaller than the sum of its proper divisors (1040362).

It is a weird number, because it is abundant, but not a pseudoperfect number.

983990 is a wasteful number, since it uses less digits than its factorization.

983990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14071.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 983990 is about 991.9627009117. The cubic root of 983990 is about 99.4634597272.

The spelling of 983990 in words is "nine hundred eighty-three thousand, nine hundred ninety".