999829378 has 16 divisors (see below), whose sum is σ = 1540082016. Its totient is φ = 486551520.

The previous prime is 999829367. The next prime is 999829379. The reversal of 999829378 is 873928999.

999829378 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 2×999829378² = 1999317570223733768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999829379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3798 + ... + 44878.

It is an arithmetic number, because the mean of its divisors is an integer number (96255126).

Almost surely, 2^999829378 is an apocalyptic number.

999829378 is a deficient number, since it is larger than the sum of its proper divisors (540252638).

999829378 is a wasteful number, since it uses less digits than its factorization.

999829378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41409.

The product of its digits is 17635968, while the sum is 64.

The square root of 999829378 is about 31620.0787159046. The cubic root of 999829378 is about 999.9431227650.

The spelling of 999829378 in words is "nine hundred ninety-nine million, eight hundred twenty-nine thousand, three hundred seventy-eight".