90854287 has 2 divisors, whose sum is σ = 90854288. Its totient is φ = 90854286.

The previous prime is 90854261. The next prime is 90854293. The reversal of 90854287 is 78245809.

It is a strong prime.

It is an emirp because it is prime and its reverse (78245809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90854287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90854297) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45427143 + 45427144.

It is an arithmetic number, because the mean of its divisors is an integer number (45427144).

Almost surely, 2^90854287 is an apocalyptic number.

90854287 is a deficient number, since it is larger than the sum of its proper divisors (1).

90854287 is an equidigital number, since it uses as much as digits as its factorization.

90854287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 90854287 is about 9531.7515179530. The cubic root of 90854287 is about 449.5539398844.

The spelling of 90854287 in words is "ninety million, eight hundred fifty-four thousand, two hundred eighty-seven".