90443117 has 2 divisors, whose sum is σ = 90443118. Its totient is φ = 90443116.

The previous prime is 90443063. The next prime is 90443231. The reversal of 90443117 is 71134409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87965641 + 2477476 = 9379^2 + 1574^2 .

It is a cyclic number.

It is not a de Polignac number, because 90443117 - 2¹⁴ = 90426733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90443117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90446117) 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, 45221558 + 45221559.

It is an arithmetic number, because the mean of its divisors is an integer number (45221559).

Almost surely, 2^90443117 is an apocalyptic number.

It is an amenable number.

90443117 is a deficient number, since it is larger than the sum of its proper divisors (1).

90443117 is an equidigital number, since it uses as much as digits as its factorization.

90443117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90443117 is about 9510.1586211798. The cubic root of 90443117 is about 448.8747474301.

The spelling of 90443117 in words is "ninety million, four hundred forty-three thousand, one hundred seventeen".