984090 has 16 divisors (see below), whose sum is σ = 2361888. Its totient is φ = 262416.

The previous prime is 984083. The next prime is 984091. The reversal of 984090 is 90489.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 32803 = 984090 / (9 + 8 + 4 + 0 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (984091) by changing a digit.

984090 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16372 + ... + 16431.

It is an arithmetic number, because the mean of its divisors is an integer number (147618).

2⁹⁸⁴⁰⁹⁰ is an apocalyptic number.

984090 is an abundant number, since it is smaller than the sum of its proper divisors (1377798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

984090 is a wasteful number, since it uses less digits than its factorization.

984090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32813.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 984090 is about 992.0131047521. The cubic root of 984090 is about 99.4668290057.

The spelling of 984090 in words is "nine hundred eighty-four thousand, ninety".