840826826 has 16 divisors (see below), whose sum is σ = 1487915520. Its totient is φ = 348729840.

The previous prime is 840826823. The next prime is 840826853. The reversal of 840826826 is 628628048.

It is not an unprimeable number, because it can be changed into a prime (840826823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968261 + ... + 969128.

It is an arithmetic number, because the mean of its divisors is an integer number (92994720).

Almost surely, 2^840826826 is an apocalyptic number.

840826826 is a deficient number, since it is larger than the sum of its proper divisors (647088694).

840826826 is a wasteful number, since it uses less digits than its factorization.

840826826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937429.

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 840826826 is about 28997.0140876608. The cubic root of 840826826 is about 943.8482748647.

The spelling of 840826826 in words is "eight hundred forty million, eight hundred twenty-six thousand, eight hundred twenty-six".