394850156544 has 240 divisors, whose sum is σ = 1207671037440. Its totient is φ = 127366594560.

The previous prime is 394850156489. The next prime is 394850156563. The reversal of 394850156544 is 445651058493.

394850156544 is a `hidden beast` number, since 3 + 9 + 4 + 85 + 0 + 15 + 6 + 544 = 666.

It is a super-2 number, since 2×394850156544² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13699012 + ... + 13727804.

It is an arithmetic number, because the mean of its divisors is an integer number (5031962656).

Almost surely, 2^394850156544 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 394850156544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603835518720).

394850156544 is an abundant number, since it is smaller than the sum of its proper divisors (812820880896).

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

394850156544 is an equidigital number, since it uses as much as digits as its factorization.

394850156544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28861 (or 28829 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 394850156544 in words is "three hundred ninety-four billion, eight hundred fifty million, one hundred fifty-six thousand, five hundred forty-four".