394838771449 has 24 divisors (see below), whose sum is σ = 418688520000. Its totient is φ = 372289024800.

The previous prime is 394838771429. The next prime is 394838771471. The reversal of 394838771449 is 944177838493.

It is not a de Polignac number, because 394838771449 - 2¹¹ = 394838769401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394838771429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78981052 + ... + 78986050.

It is an arithmetic number, because the mean of its divisors is an integer number (17445355000).

Almost surely, 2^394838771449 is an apocalyptic number.

It is an amenable number.

394838771449 is a deficient number, since it is larger than the sum of its proper divisors (23849748551).

394838771449 is a wasteful number, since it uses less digits than its factorization.

394838771449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029 (or 6010 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 67.

The spelling of 394838771449 in words is "three hundred ninety-four billion, eight hundred thirty-eight million, seven hundred seventy-one thousand, four hundred forty-nine".