840141899 has 2 divisors, whose sum is σ = 840141900. Its totient is φ = 840141898.

The previous prime is 840141893. The next prime is 840141901. The reversal of 840141899 is 998141048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840141899 - 2¹² = 840137803 is a prime.

Together with 840141901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (840141893) 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, 420070949 + 420070950.

It is an arithmetic number, because the mean of its divisors is an integer number (420070950).

Almost surely, 2^840141899 is an apocalyptic number.

840141899 is a deficient number, since it is larger than the sum of its proper divisors (1).

840141899 is an equidigital number, since it uses as much as digits as its factorization.

840141899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 840141899 is about 28985.2013793246. The cubic root of 840141899 is about 943.5919229178.

The spelling of 840141899 in words is "eight hundred forty million, one hundred forty-one thousand, eight hundred ninety-nine".