840456374 has 12 divisors (see below), whose sum is σ = 1330529724. Its totient is φ = 398110572.

The previous prime is 840456359. The next prime is 840456427. The reversal of 840456374 is 473654048.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 581312 + ... + 582755.

It is an arithmetic number, because the mean of its divisors is an integer number (110877477).

Almost surely, 2^840456374 is an apocalyptic number.

840456374 is a deficient number, since it is larger than the sum of its proper divisors (490073350).

840456374 is a wasteful number, since it uses less digits than its factorization.

840456374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164107 (or 1164088 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The square root of 840456374 is about 28990.6256227768. The cubic root of 840456374 is about 943.7096407517.

The spelling of 840456374 in words is "eight hundred forty million, four hundred fifty-six thousand, three hundred seventy-four".