840453408828 has 36 divisors (see below), whose sum is σ = 2317613946648. Its totient is φ = 254682851040.

The previous prime is 840453408827. The next prime is 840453408833. The reversal of 840453408828 is 828804354048.

840453408828 is a `hidden beast` number, since 8 + 4 + 0 + 4 + 534 + 0 + 88 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840453408827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1061178151 + ... + 1061178942.

Almost surely, 2^840453408828 is an apocalyptic number.

It is an amenable number.

840453408828 is an abundant number, since it is smaller than the sum of its proper divisors (1477160537820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840453408828 is a wasteful number, since it uses less digits than its factorization.

840453408828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122357114 (or 2122357109 counting only the distinct ones).

The product of its (nonzero) digits is 7864320, while the sum is 54.

The spelling of 840453408828 in words is "eight hundred forty billion, four hundred fifty-three million, four hundred eight thousand, eight hundred twenty-eight".