394382011947 has 16 divisors (see below), whose sum is σ = 655596072192. Its totient is φ = 204873772320.

The previous prime is 394382011927. The next prime is 394382011987. The reversal of 394382011947 is 749110283493.

It is a happy number.

It is not a de Polignac number, because 394382011947 - 2¹⁴ = 394381995563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 394382011947.

It is not an unprimeable number, because it can be changed into a prime (394382011927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853640488 + ... + 853640949.

It is an arithmetic number, because the mean of its divisors is an integer number (40974754512).

Almost surely, 2^394382011947 is an apocalyptic number.

394382011947 is a deficient number, since it is larger than the sum of its proper divisors (261214060245).

394382011947 is a wasteful number, since it uses less digits than its factorization.

394382011947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707281458.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 394382011947 in words is "three hundred ninety-four billion, three hundred eighty-two million, eleven thousand, nine hundred forty-seven".