984945 has 16 divisors (see below), whose sum is σ = 1697472. Its totient is φ = 484800.

The previous prime is 984931. The next prime is 984947. The reversal of 984945 is 549489.

It is not a de Polignac number, because 984945 - 2⁵ = 984913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 984945.

It is not an unprimeable number, because it can be changed into a prime (984947) 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 15 ways as a sum of consecutive naturals, for example, 2331 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (106092).

2⁹⁸⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

984945 is a deficient number, since it is larger than the sum of its proper divisors (712527).

984945 is a wasteful number, since it uses less digits than its factorization.

984945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072.

The product of its digits is 51840, while the sum is 39.

The square root of 984945 is about 992.4439530775. The cubic root of 984945 is about 99.4956270226.

Subtracting from 984945 its sum of digits (39), we obtain a triangular number (984906 = T₁₄₀₃).

The spelling of 984945 in words is "nine hundred eighty-four thousand, nine hundred forty-five".