90603841 has 2 divisors, whose sum is σ = 90603842. Its totient is φ = 90603840.

The previous prime is 90603839. The next prime is 90603857. The reversal of 90603841 is 14830609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 43612816 = 6855^2 + 6604^2 .

It is an emirp because it is prime and its reverse (14830609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90603841 - 2¹ = 90603839 is a prime.

Together with 90603839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90603811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45301920 + 45301921.

It is an arithmetic number, because the mean of its divisors is an integer number (45301921).

Almost surely, 2^90603841 is an apocalyptic number.

It is an amenable number.

90603841 is a deficient number, since it is larger than the sum of its proper divisors (1).

90603841 is an equidigital number, since it uses as much as digits as its factorization.

90603841 is an evil number, because the sum of its binary digits is even.

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

The square root of 90603841 is about 9518.6049923295. The cubic root of 90603841 is about 449.1404844437.

The spelling of 90603841 in words is "ninety million, six hundred three thousand, eight hundred forty-one".