986490 has 48 divisors (see below), whose sum is σ = 2614248. Its totient is φ = 258048.

The previous prime is 986477. The next prime is 986497. The reversal of 986490 is 94689.

986490 is a `hidden beast` number, since 9 + 8 + 649 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 463761 + 522729 = 681^2 + 723^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (986497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8674 + ... + 8786.

2⁹⁸⁶⁴⁹⁰ is an apocalyptic number.

986490 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 986490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307124).

986490 is an abundant number, since it is smaller than the sum of its proper divisors (1627758).

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

986490 is a wasteful number, since it uses less digits than its factorization.

986490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 986490 is about 993.2220295583. Note that the first 3 decimals coincide. The cubic root of 986490 is about 99.5476233058.

The spelling of 986490 in words is "nine hundred eighty-six thousand, four hundred ninety".