823899916 has 72 divisors (see below), whose sum is σ = 1720577376. Its totient is φ = 344090880.

The previous prime is 823899913. The next prime is 823899919. The reversal of 823899916 is 619998328.

823899916 = 2384² + 2385² + ... + 2520².

823899916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (823899913) and next prime (823899919).

It is a super-2 number, since 2×823899916² = 1357622143169614112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (823899911) 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, 1637721 + ... + 1638223.

It is an arithmetic number, because the mean of its divisors is an integer number (23896908).

Almost surely, 2^823899916 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 823899916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860288688).

823899916 is an abundant number, since it is smaller than the sum of its proper divisors (896677460).

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

823899916 is a wasteful number, since it uses less digits than its factorization.

823899916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 710 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 55.

The square root of 823899916 is about 28703.6568402007. The cubic root of 823899916 is about 937.4716709899.

The spelling of 823899916 in words is "eight hundred twenty-three million, eight hundred ninety-nine thousand, nine hundred sixteen".