840386366 has 16 divisors (see below), whose sum is σ = 1279741200. Its totient is φ = 413823168.

The previous prime is 840386333. The next prime is 840386387. The reversal of 840386366 is 663683048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104000 + ... + 111788.

It is an arithmetic number, because the mean of its divisors is an integer number (79983825).

Almost surely, 2^840386366 is an apocalyptic number.

840386366 is a deficient number, since it is larger than the sum of its proper divisors (439354834).

840386366 is a wasteful number, since it uses less digits than its factorization.

840386366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603.

The product of its (nonzero) digits is 497664, while the sum is 44.

The square root of 840386366 is about 28989.4181728437. The cubic root of 840386366 is about 943.6834371077.

The spelling of 840386366 in words is "eight hundred forty million, three hundred eighty-six thousand, three hundred sixty-six".