999720203 has 2 divisors, whose sum is σ = 999720204. Its totient is φ = 999720202.

The previous prime is 999720193. The next prime is 999720223. The reversal of 999720203 is 302027999.

999720203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999720203 - 2⁴ = 999720187 is a prime.

It is a super-2 number, since 2×999720203² = 1998880968572722418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999720223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499860101 + 499860102.

It is an arithmetic number, because the mean of its divisors is an integer number (499860102).

Almost surely, 2^999720203 is an apocalyptic number.

999720203 is a deficient number, since it is larger than the sum of its proper divisors (1).

999720203 is an equidigital number, since it uses as much as digits as its factorization.

999720203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 999720203 is about 31618.3523131741. The cubic root of 999720203 is about 999.9067256335.

The spelling of 999720203 in words is "nine hundred ninety-nine million, seven hundred twenty thousand, two hundred three".