999824407 has 2 divisors, whose sum is σ = 999824408. Its totient is φ = 999824406.

The previous prime is 999824393. The next prime is 999824411. The reversal of 999824407 is 704428999.

It is a happy number.

999824407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999824407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999822407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499912203 + 499912204.

It is an arithmetic number, because the mean of its divisors is an integer number (499912204).

Almost surely, 2^999824407 is an apocalyptic number.

999824407 is a deficient number, since it is larger than the sum of its proper divisors (1).

999824407 is an equidigital number, since it uses as much as digits as its factorization.

999824407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 999824407 is about 31620.0001106894. Note that the first 3 decimals coincide. The cubic root of 999824407 is about 999.9414655738.

The spelling of 999824407 in words is "nine hundred ninety-nine million, eight hundred twenty-four thousand, four hundred seven".