1000909997 has 2 divisors, whose sum is σ = 1000909998. Its totient is φ = 1000909996.

The previous prime is 1000909963. The next prime is 1000910023. The reversal of 1000909997 is 7999090001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595652836 + 405257161 = 24406^2 + 20131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000909997 - 2²² = 996715693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000909937) 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, 500454998 + 500454999.

It is an arithmetic number, because the mean of its divisors is an integer number (500454999).

Almost surely, 2^1000909997 is an apocalyptic number.

It is an amenable number.

1000909997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000909997 is an equidigital number, since it uses as much as digits as its factorization.

1000909997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 1000909997 is about 31637.1616457608. The cubic root of 1000909997 is about 1000.3032403693.

Adding to 1000909997 its reverse (7999090001), we get a palindrome (8999999998).

The spelling of 1000909997 in words is "one billion, nine hundred nine thousand, nine hundred ninety-seven".