840039174954 has 192 divisors, whose sum is σ = 2117347464960. Its totient is φ = 235760025600.

The previous prime is 840039174943. The next prime is 840039174967. The reversal of 840039174954 is 459471930048.

It is a self number, because there is not a number n which added to its sum of digits gives 840039174954.

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 95 ways as a sum of consecutive naturals, for example, 1370373552 + ... + 1370374164.

It is an arithmetic number, because the mean of its divisors is an integer number (11027851380).

Almost surely, 2^840039174954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840039174954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058673732480).

840039174954 is an abundant number, since it is smaller than the sum of its proper divisors (1277308290006).

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

840039174954 is a wasteful number, since it uses less digits than its factorization.

840039174954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 840039174954 in words is "eight hundred forty billion, thirty-nine million, one hundred seventy-four thousand, nine hundred fifty-four".