999516 has 48 divisors (see below), whose sum is σ = 2718464. Its totient is φ = 279936.

The previous prime is 999499. The next prime is 999521. The reversal of 999516 is 615999.

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 999516.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6051 + ... + 6213.

2⁹⁹⁹⁵¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1359232).

999516 is an abundant number, since it is smaller than the sum of its proper divisors (1718948).

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

999516 is a wasteful number, since it uses less digits than its factorization.

999516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 248 counting only the distinct ones).

The product of its digits is 21870, while the sum is 39.

The square root of 999516 is about 999.7579707109. The cubic root of 999516 is about 99.9838640631.

It can be divided in two parts, 9995 and 16, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 999516 in words is "nine hundred ninety-nine thousand, five hundred sixteen".