999804359 has 2 divisors, whose sum is σ = 999804360. Its totient is φ = 999804358.

The previous prime is 999804341. The next prime is 999804389. The reversal of 999804359 is 953408999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999804359 - 2¹⁶ = 999738823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999804389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499902179 + 499902180.

It is an arithmetic number, because the mean of its divisors is an integer number (499902180).

Almost surely, 2^999804359 is an apocalyptic number.

999804359 is a deficient number, since it is larger than the sum of its proper divisors (1).

999804359 is an equidigital number, since it uses as much as digits as its factorization.

999804359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 999804359 is about 31619.6830945536. The cubic root of 999804359 is about 999.9347820800.

The spelling of 999804359 in words is "nine hundred ninety-nine million, eight hundred four thousand, three hundred fifty-nine".