840484048440 has 32 divisors (see below), whose sum is σ = 2521452145680. Its totient is φ = 224129079552.

The previous prime is 840484048433. The next prime is 840484048447. The reversal of 840484048440 is 44840484048.

It is an interprime number because it is at equal distance from previous prime (840484048433) and next prime (840484048447).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 840484048440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840484048447) by changing a digit.

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, 3502016749 + ... + 3502016988.

Almost surely, 2^840484048440 is an apocalyptic number.

It is an amenable number.

840484048440 is an abundant number, since it is smaller than the sum of its proper divisors (1680968097240).

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

840484048440 is a wasteful number, since it uses less digits than its factorization.

840484048440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004033751 (or 7004033747 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 48.

The spelling of 840484048440 in words is "eight hundred forty billion, four hundred eighty-four million, forty-eight thousand, four hundred forty".