840427452944 has 40 divisors (see below), whose sum is σ = 1644005448792. Its totient is φ = 416173721600.

The previous prime is 840427452923. The next prime is 840427452967. The reversal of 840427452944 is 449254724048.

It can be written as a sum of positive squares in 4 ways, for example, as 203751126544 + 636676326400 = 451388^2 + 797920^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2173562 + ... + 2530854.

Almost surely, 2^840427452944 is an apocalyptic number.

It is an amenable number.

840427452944 is a deficient number, since it is larger than the sum of its proper divisors (803577995848).

840427452944 is a wasteful number, since it uses less digits than its factorization.

840427452944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358715 (or 358709 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 53.

The spelling of 840427452944 in words is "eight hundred forty billion, four hundred twenty-seven million, four hundred fifty-two thousand, nine hundred forty-four".