8990101 has 2 divisors, whose sum is σ = 8990102. Its totient is φ = 8990100.

The previous prime is 8990099. The next prime is 8990123. The reversal of 8990101 is 1010998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7102225 + 1887876 = 2665^2 + 1374^2 .

It is a cyclic number.

It is not a de Polignac number, because 8990101 - 2¹ = 8990099 is a prime.

Together with 8990099, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8990101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8990141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4495050 + 4495051.

It is an arithmetic number, because the mean of its divisors is an integer number (4495051).

Almost surely, 2^8990101 is an apocalyptic number.

It is an amenable number.

8990101 is a deficient number, since it is larger than the sum of its proper divisors (1).

8990101 is an equidigital number, since it uses as much as digits as its factorization.

8990101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 8990101 is about 2998.3497127587. The cubic root of 8990101 is about 207.9320922920.

The spelling of 8990101 in words is "eight million, nine hundred ninety thousand, one hundred one".