999424859 has 2 divisors, whose sum is σ = 999424860. Its totient is φ = 999424858.

The previous prime is 999424817. The next prime is 999424879. The reversal of 999424859 is 958424999.

999424859 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 not a de Polignac number, because 999424859 - 2¹⁶ = 999359323 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999424798 and 999424807.

It is not a weakly prime, because it can be changed into another prime (999424879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499712429 + 499712430.

It is an arithmetic number, because the mean of its divisors is an integer number (499712430).

Almost surely, 2^999424859 is an apocalyptic number.

999424859 is a deficient number, since it is larger than the sum of its proper divisors (1).

999424859 is an equidigital number, since it uses as much as digits as its factorization.

999424859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 59.

The square root of 999424859 is about 31613.6815160778. The cubic root of 999424859 is about 999.8082495675.

The spelling of 999424859 in words is "nine hundred ninety-nine million, four hundred twenty-four thousand, eight hundred fifty-nine".