404345671860 has 144 divisors (see below), whose sum is σ = 1249089859584. Its totient is φ = 97653164544.

The previous prime is 404345671843. The next prime is 404345671867. The reversal of 404345671860 is 68176543404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404345671867) 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 47 ways as a sum of consecutive naturals, for example, 161229 + ... + 913611.

It is an arithmetic number, because the mean of its divisors is an integer number (8674235136).

Almost surely, 2^404345671860 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 404345671860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624544929792).

404345671860 is an abundant number, since it is smaller than the sum of its proper divisors (844744187724).

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

404345671860 is a wasteful number, since it uses less digits than its factorization.

404345671860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752474 (or 752459 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 404345671860 in words is "four hundred four billion, three hundred forty-five million, six hundred seventy-one thousand, eight hundred sixty".