999403794 has 24 divisors (see below), whose sum is σ = 2176602012. Its totient is φ = 331407360.

The previous prime is 999403793. The next prime is 999403841. The reversal of 999403794 is 497304999.

It can be written as a sum of positive squares in 2 ways, for example, as 911738025 + 87665769 = 30195^2 + 9363^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 999403794.

It is not an unprimeable number, because it can be changed into a prime (999403793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140367 + ... + 147314.

Almost surely, 2^999403794 is an apocalyptic number.

999403794 is an abundant number, since it is smaller than the sum of its proper divisors (1177198218).

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

999403794 is a wasteful number, since it uses less digits than its factorization.

999403794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287882 (or 287879 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 999403794 is about 31613.3483516062. The cubic root of 999403794 is about 999.8012251578.

The spelling of 999403794 in words is "nine hundred ninety-nine million, four hundred three thousand, seven hundred ninety-four".