873817394940 has 240 divisors, whose sum is σ = 3171449504160. Its totient is φ = 199729393920.

The previous prime is 873817394929. The next prime is 873817394951. The reversal of 873817394940 is 49493718378.

873817394940 is a `hidden beast` number, since 8 + 73 + 8 + 1 + 73 + 9 + 494 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (873817394929) and next prime (873817394951).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 959560 + ... + 1633520.

It is an arithmetic number, because the mean of its divisors is an integer number (13214372934).

Almost surely, 2^873817394940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873817394940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585724752080).

873817394940 is an abundant number, since it is smaller than the sum of its proper divisors (2297632109220).

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

873817394940 is a wasteful number, since it uses less digits than its factorization.

873817394940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674007 (or 673978 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 873817394940 in words is "eight hundred seventy-three billion, eight hundred seventeen million, three hundred ninety-four thousand, nine hundred forty".