999899053 has 2 divisors, whose sum is σ = 999899054. Its totient is φ = 999899052.

The previous prime is 999899051. The next prime is 999899077. The reversal of 999899053 is 350998999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 973252809 + 26646244 = 31197^2 + 5162^2 .

It is a cyclic number.

It is not a de Polignac number, because 999899053 - 2¹ = 999899051 is a prime.

Together with 999899051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 999898982 and 999899000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999899051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499949526 + 499949527.

It is an arithmetic number, because the mean of its divisors is an integer number (499949527).

Almost surely, 2^999899053 is an apocalyptic number.

It is an amenable number.

999899053 is a deficient number, since it is larger than the sum of its proper divisors (1).

999899053 is an equidigital number, since it uses as much as digits as its factorization.

999899053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7085880, while the sum is 61.

The square root of 999899053 is about 31621.1804491863. The cubic root of 999899053 is about 999.9663498677.

The spelling of 999899053 in words is "nine hundred ninety-nine million, eight hundred ninety-nine thousand, fifty-three".