840106799 has 16 divisors (see below), whose sum is σ = 1024379136. Its totient is φ = 672547200.

The previous prime is 840106747. The next prime is 840106801. The reversal of 840106799 is 997601048.

It is a de Polignac number, because none of the positive numbers 2^k-840106799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840106739) 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 in 15 ways as a sum of consecutive naturals, for example, 11357 + ... + 42534.

It is an arithmetic number, because the mean of its divisors is an integer number (64023696).

Almost surely, 2^840106799 is an apocalyptic number.

840106799 is a deficient number, since it is larger than the sum of its proper divisors (184272337).

840106799 is a wasteful number, since it uses less digits than its factorization.

840106799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54046.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 840106799 is about 28984.5958916111. The cubic root of 840106799 is about 943.5787820671.

It can be divided in two parts, 84010 and 6799, that added together give a palindrome (90809).

The spelling of 840106799 in words is "eight hundred forty million, one hundred six thousand, seven hundred ninety-nine".