90854317 has 2 divisors, whose sum is σ = 90854318. Its totient is φ = 90854316.

The previous prime is 90854311. The next prime is 90854329. The reversal of 90854317 is 71345809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56115081 + 34739236 = 7491^2 + 5894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90854317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90854311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45427158 + 45427159.

It is an arithmetic number, because the mean of its divisors is an integer number (45427159).

Almost surely, 2^90854317 is an apocalyptic number.

It is an amenable number.

90854317 is a deficient number, since it is larger than the sum of its proper divisors (1).

90854317 is an equidigital number, since it uses as much as digits as its factorization.

90854317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 90854317 is about 9531.7530916406. The cubic root of 90854317 is about 449.5539893651.

It can be divided in two parts, 908 and 54317, that added together give a square (55225 = 235²).

The spelling of 90854317 in words is "ninety million, eight hundred fifty-four thousand, three hundred seventeen".