90850447 has 2 divisors, whose sum is σ = 90850448. Its totient is φ = 90850446.

The previous prime is 90850439. The next prime is 90850453. The reversal of 90850447 is 74405809.

It is a strong prime.

It is an emirp because it is prime and its reverse (74405809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90850447 - 2³ = 90850439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90853447) 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, 45425223 + 45425224.

It is an arithmetic number, because the mean of its divisors is an integer number (45425224).

Almost surely, 2^90850447 is an apocalyptic number.

90850447 is a deficient number, since it is larger than the sum of its proper divisors (1).

90850447 is an equidigital number, since it uses as much as digits as its factorization.

90850447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 90850447 is about 9531.5500838006. The cubic root of 90850447 is about 449.5476062575.

The spelling of 90850447 in words is "ninety million, eight hundred fifty thousand, four hundred forty-seven".