999129653 has 2 divisors, whose sum is σ = 999129654. Its totient is φ = 999129652.

The previous prime is 999129641. The next prime is 999129667. The reversal of 999129653 is 356921999.

999129653 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 can be written as a sum of positive squares in only one way, i.e., 661415524 + 337714129 = 25718^2 + 18377^2 .

It is a cyclic number.

It is not a de Polignac number, because 999129653 - 2⁶ = 999129589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999129595 and 999129604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999129623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499564826 + 499564827.

It is an arithmetic number, because the mean of its divisors is an integer number (499564827).

Almost surely, 2^999129653 is an apocalyptic number.

It is an amenable number.

999129653 is a deficient number, since it is larger than the sum of its proper divisors (1).

999129653 is an equidigital number, since it uses as much as digits as its factorization.

999129653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 53.

The square root of 999129653 is about 31609.0122117095. The cubic root of 999129653 is about 999.7098001255.

The spelling of 999129653 in words is "nine hundred ninety-nine million, one hundred twenty-nine thousand, six hundred fifty-three".