890010101 has 2 divisors, whose sum is σ = 890010102. Its totient is φ = 890010100.

The previous prime is 890010097. The next prime is 890010113. The reversal of 890010101 is 101010098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 658179025 + 231831076 = 25655^2 + 15226^2 .

It is a cyclic number.

It is not a de Polignac number, because 890010101 - 2² = 890010097 is a prime.

890010101 is a modest number, since divided by 10101 gives 890 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890010161) 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, 445005050 + 445005051.

It is an arithmetic number, because the mean of its divisors is an integer number (445005051).

Almost surely, 2^890010101 is an apocalyptic number.

It is an amenable number.

890010101 is a deficient number, since it is larger than the sum of its proper divisors (1).

890010101 is an equidigital number, since it uses as much as digits as its factorization.

890010101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 890010101 is about 29833.0370730169. The cubic root of 890010101 is about 961.9038106028.

Adding to 890010101 its reverse (101010098), we get a palindrome (991020199).

The spelling of 890010101 in words is "eight hundred ninety million, ten thousand, one hundred one".