100906609 has 2 divisors, whose sum is σ = 100906610. Its totient is φ = 100906608.

The previous prime is 100906583. The next prime is 100906649. The reversal of 100906609 is 906609001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92698384 + 8208225 = 9628^2 + 2865^2 .

It is an emirp because it is prime and its reverse (906609001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100906609 - 2¹⁷ = 100775537 is a prime.

It is not a weakly prime, because it can be changed into another prime (100906649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50453304 + 50453305.

It is an arithmetic number, because the mean of its divisors is an integer number (50453305).

Almost surely, 2^100906609 is an apocalyptic number.

It is an amenable number.

100906609 is a deficient number, since it is larger than the sum of its proper divisors (1).

100906609 is an equidigital number, since it uses as much as digits as its factorization.

100906609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 100906609 is about 10045.2281706291. The cubic root of 100906609 is about 465.5573676463.

The spelling of 100906609 in words is "one hundred million, nine hundred six thousand, six hundred nine".