840055604 has 12 divisors (see below), whose sum is σ = 1471219428. Its totient is φ = 419707200.

The previous prime is 840055589. The next prime is 840055631. The reversal of 840055604 is 406550048.

It can be written as a sum of positive squares in 2 ways, for example, as 542424100 + 297631504 = 23290^2 + 17252^2 .

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 3 ways as a sum of consecutive naturals, for example, 74207 + ... + 84774.

It is an arithmetic number, because the mean of its divisors is an integer number (122601619).

Almost surely, 2^840055604 is an apocalyptic number.

It is an amenable number.

840055604 is a deficient number, since it is larger than the sum of its proper divisors (631163824).

840055604 is a wasteful number, since it uses less digits than its factorization.

840055604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160306 (or 160304 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 840055604 is about 28983.7127366388. The cubic root of 840055604 is about 943.5596148624.

The spelling of 840055604 in words is "eight hundred forty million, fifty-five thousand, six hundred four".