999800059 has 2 divisors, whose sum is σ = 999800060. Its totient is φ = 999800058.

The previous prime is 999799987. The next prime is 999800069. The reversal of 999800059 is 950008999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999800059 - 2¹⁵ = 999767291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999799985 and 999800021.

It is not a weakly prime, because it can be changed into another prime (999800069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499900029 + 499900030.

It is an arithmetic number, because the mean of its divisors is an integer number (499900030).

Almost surely, 2^999800059 is an apocalyptic number.

999800059 is a deficient number, since it is larger than the sum of its proper divisors (1).

999800059 is an equidigital number, since it uses as much as digits as its factorization.

999800059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 49.

The square root of 999800059 is about 31619.6150988591. The cubic root of 999800059 is about 999.9333485577.

The spelling of 999800059 in words is "nine hundred ninety-nine million, eight hundred thousand, fifty-nine".