999630001 has 2 divisors, whose sum is σ = 999630002. Its totient is φ = 999630000.

The previous prime is 999629993. The next prime is 999630053. The reversal of 999630001 is 100036999.

999630001 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., 791578225 + 208051776 = 28135^2 + 14424^2 .

It is a cyclic number.

It is not a de Polignac number, because 999630001 - 2³ = 999629993 is a prime.

It is equal to p_50829814 and since 999630001 and 50829814 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (999630091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499815000 + 499815001.

It is an arithmetic number, because the mean of its divisors is an integer number (499815001).

Almost surely, 2^999630001 is an apocalyptic number.

It is an amenable number.

999630001 is a deficient number, since it is larger than the sum of its proper divisors (1).

999630001 is an equidigital number, since it uses as much as digits as its factorization.

999630001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 999630001 is about 31616.9258625819. The cubic root of 999630001 is about 999.8766517858.

The spelling of 999630001 in words is "nine hundred ninety-nine million, six hundred thirty thousand, one".