90106843 has 2 divisors, whose sum is σ = 90106844. Its totient is φ = 90106842.

The previous prime is 90106831. The next prime is 90106883. The reversal of 90106843 is 34860109.

It is a weak prime.

It is an emirp because it is prime and its reverse (34860109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90106843 - 2⁵ = 90106811 is a prime.

It is not a weakly prime, because it can be changed into another prime (90106813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45053421 + 45053422.

It is an arithmetic number, because the mean of its divisors is an integer number (45053422).

Almost surely, 2^90106843 is an apocalyptic number.

90106843 is a deficient number, since it is larger than the sum of its proper divisors (1).

90106843 is an equidigital number, since it uses as much as digits as its factorization.

90106843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 90106843 is about 9492.4624307921. The cubic root of 90106843 is about 448.3177403525.

The spelling of 90106843 in words is "ninety million, one hundred six thousand, eight hundred forty-three".