999630053 has 2 divisors, whose sum is σ = 999630054. Its totient is φ = 999630052.

The previous prime is 999630001. The next prime is 999630067. The reversal of 999630053 is 350036999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921608164 + 78021889 = 30358^2 + 8833^2 .

It is a cyclic number.

It is not a de Polignac number, because 999630053 - 2²⁰ = 998581477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999629986 and 999630013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999630083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499815026 + 499815027.

It is an arithmetic number, because the mean of its divisors is an integer number (499815027).

Almost surely, 2^999630053 is an apocalyptic number.

It is an amenable number.

999630053 is a deficient number, since it is larger than the sum of its proper divisors (1).

999630053 is an equidigital number, since it uses as much as digits as its factorization.

999630053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 999630053 is about 31616.9266849262. The cubic root of 999630053 is about 999.8766691235.

The spelling of 999630053 in words is "nine hundred ninety-nine million, six hundred thirty thousand, fifty-three".