999486 has 32 divisors (see below), whose sum is σ = 2257920. Its totient is φ = 327672.

The previous prime is 999451. The next prime is 999491. The reversal of 999486 is 684999.

999486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

999486 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 15 ways as a sum of consecutive naturals, for example, 4371 + ... + 4593.

It is an arithmetic number, because the mean of its divisors is an integer number (70560).

2⁹⁹⁹⁴⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128960).

999486 is an abundant number, since it is smaller than the sum of its proper divisors (1258434).

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

999486 is a wasteful number, since it uses less digits than its factorization.

999486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 999486 is about 999.7429669670. The cubic root of 999486 is about 99.9828637303.

It can be divided in two parts, 999 and 486, that added together give a triangular number (1485 = T₅₄).

The spelling of 999486 in words is "nine hundred ninety-nine thousand, four hundred eighty-six".