840088841 has 2 divisors, whose sum is σ = 840088842. Its totient is φ = 840088840.

The previous prime is 840088829. The next prime is 840088853. The reversal of 840088841 is 148880048.

It is a balanced prime because it is at equal distance from previous prime (840088829) and next prime (840088853).

It can be written as a sum of positive squares in only one way, i.e., 446899600 + 393189241 = 21140^2 + 19829^2 .

It is a cyclic number.

It is not a de Polignac number, because 840088841 - 2²² = 835894537 is a prime.

It is not a weakly prime, because it can be changed into another prime (840088801) 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, 420044420 + 420044421.

It is an arithmetic number, because the mean of its divisors is an integer number (420044421).

Almost surely, 2^840088841 is an apocalyptic number.

It is an amenable number.

840088841 is a deficient number, since it is larger than the sum of its proper divisors (1).

840088841 is an equidigital number, since it uses as much as digits as its factorization.

840088841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65536, while the sum is 41.

The square root of 840088841 is about 28984.2861047154. The cubic root of 840088841 is about 943.5720587519.

The spelling of 840088841 in words is "eight hundred forty million, eighty-eight thousand, eight hundred forty-one".