999416 has 32 divisors (see below), whose sum is σ = 2101680. Its totient is φ = 441600.

The previous prime is 999389. The next prime is 999431. The reversal of 999416 is 614999.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 999416.

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 999416.

It is an unprimeable number.

999416 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, 3470 + ... + 3746.

2⁹⁹⁹⁴¹⁶ 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 999416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050840).

999416 is an abundant number, since it is smaller than the sum of its proper divisors (1102264).

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

999416 is a wasteful number, since it uses less digits than its factorization.

999416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 331 counting only the distinct ones).

The product of its digits is 17496, while the sum is 38.

The square root of 999416 is about 999.7079573555. The cubic root of 999416 is about 99.9805295426.

The spelling of 999416 in words is "nine hundred ninety-nine thousand, four hundred sixteen".