999411401 has 2 divisors, whose sum is σ = 999411402. Its totient is φ = 999411400.

The previous prime is 999411389. The next prime is 999411451. The reversal of 999411401 is 104114999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 930189001 + 69222400 = 30499^2 + 8320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999411401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (999411451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499705700 + 499705701.

It is an arithmetic number, because the mean of its divisors is an integer number (499705701).

Almost surely, 2^999411401 is an apocalyptic number.

It is an amenable number.

999411401 is a deficient number, since it is larger than the sum of its proper divisors (1).

999411401 is an equidigital number, since it uses as much as digits as its factorization.

999411401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 999411401 is about 31613.4686644791. The cubic root of 999411401 is about 999.8037618264.

The spelling of 999411401 in words is "nine hundred ninety-nine million, four hundred eleven thousand, four hundred one".