999829380 has 96 divisors (see below), whose sum is σ = 3073795200. Its totient is φ = 240814080.

The previous prime is 999829379. The next prime is 999829417. The reversal of 999829380 is 83928999.

999829380 = T₄₁₁ + T₄₁₂ + ... + T₁₈₂₃.

999829380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×999829380² = 1999317578222368800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999829380.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98796 + ... + 108444.

It is an arithmetic number, because the mean of its divisors is an integer number (32018700).

Almost surely, 2^999829380 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 999829380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536897600).

999829380 is an abundant number, since it is smaller than the sum of its proper divisors (2073965820).

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

999829380 is a wasteful number, since it uses less digits than its factorization.

999829380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9829 (or 9827 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 57.

The square root of 999829380 is about 31620.0787475300. The cubic root of 999829380 is about 999.9431234318.

The spelling of 999829380 in words is "nine hundred ninety-nine million, eight hundred twenty-nine thousand, three hundred eighty".