999996901 has 2 divisors, whose sum is σ = 999996902. Its totient is φ = 999996900.

The previous prime is 999996827. The next prime is 999996913. The reversal of 999996901 is 109699999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586850625 + 413146276 = 24225^2 + 20326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999996901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999996901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999996301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998450 + 499998451.

It is an arithmetic number, because the mean of its divisors is an integer number (499998451).

Almost surely, 2^999996901 is an apocalyptic number.

It is an amenable number.

999996901 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996901 is an equidigital number, since it uses as much as digits as its factorization.

999996901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3188646, while the sum is 61.

The square root of 999996901 is about 31622.7276021535. The cubic root of 999996901 is about 999.9989669989.

The spelling of 999996901 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, nine hundred one".