999363999 has 4 divisors (see below), whose sum is σ = 1332485336. Its totient is φ = 666242664.

The previous prime is 999363997. The next prime is 999364013.

999363999 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 999363999 - 2¹ = 999363997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999363997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166560664 + ... + 166560669.

It is an arithmetic number, because the mean of its divisors is an integer number (333121334).

Almost surely, 2^999363999 is an apocalyptic number.

999363999 is a deficient number, since it is larger than the sum of its proper divisors (333121337).

999363999 is a wasteful number, since it uses less digits than its factorization.

999363999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333121336.

The product of its digits is 28697814, while the sum is 66.

The square root of 999363999 is about 31612.7189434886. The cubic root of 999363999 is about 999.7879547066.

The spelling of 999363999 in words is "nine hundred ninety-nine million, three hundred sixty-three thousand, nine hundred ninety-nine".