840008911472 has 20 divisors (see below), whose sum is σ = 1627532159400. Its totient is φ = 420000612288.

The previous prime is 840008911451. The next prime is 840008911499. The reversal of 840008911472 is 274119800048.

It is a super-2 number, since 2×840008911472² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533154 + ... + 2845502.

It is an arithmetic number, because the mean of its divisors is an integer number (81376607970).

Almost surely, 2^840008911472 is an apocalyptic number.

It is an amenable number.

840008911472 is a deficient number, since it is larger than the sum of its proper divisors (787523247928).

840008911472 is a wasteful number, since it uses less digits than its factorization.

840008911472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480440 (or 480434 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 840008911472 in words is "eight hundred forty billion, eight million, nine hundred eleven thousand, four hundred seventy-two".