840083899 has 2 divisors, whose sum is σ = 840083900. Its totient is φ = 840083898.

The previous prime is 840083869. The next prime is 840083953. The reversal of 840083899 is 998380048.

It is a happy number.

840083899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 840083899 - 2¹³ = 840075707 is a prime.

It is not a weakly prime, because it can be changed into another prime (840083869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420041949 + 420041950.

It is an arithmetic number, because the mean of its divisors is an integer number (420041950).

Almost surely, 2^840083899 is an apocalyptic number.

840083899 is a deficient number, since it is larger than the sum of its proper divisors (1).

840083899 is an equidigital number, since it uses as much as digits as its factorization.

840083899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 840083899 is about 28984.2008514984. The cubic root of 840083899 is about 943.5702084943.

The spelling of 840083899 in words is "eight hundred forty million, eighty-three thousand, eight hundred ninety-nine".