848090861 has 2 divisors, whose sum is σ = 848090862. Its totient is φ = 848090860.

The previous prime is 848090857. The next prime is 848090899. The reversal of 848090861 is 168090848.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830534761 + 17556100 = 28819^2 + 4190^2 .

It is a cyclic number.

It is not a de Polignac number, because 848090861 - 2² = 848090857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (848090261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424045430 + 424045431.

It is an arithmetic number, because the mean of its divisors is an integer number (424045431).

Almost surely, 2^848090861 is an apocalyptic number.

It is an amenable number.

848090861 is a deficient number, since it is larger than the sum of its proper divisors (1).

848090861 is an equidigital number, since it uses as much as digits as its factorization.

848090861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 848090861 is about 29121.9996051095. Note that the first 3 decimals coincide. The cubic root of 848090861 is about 946.5585029139.

The spelling of 848090861 in words is "eight hundred forty-eight million, ninety thousand, eight hundred sixty-one".