394662491395 has 24 divisors (see below), whose sum is σ = 484070490288. Its totient is φ = 308894452800.

The previous prime is 394662491357. The next prime is 394662491413. The reversal of 394662491395 is 593194266493.

It is not a de Polignac number, because 394662491395 - 2³¹ = 392515007747 is a prime.

It is a super-2 number, since 2×394662491395² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39105300 + ... + 39115390.

It is an arithmetic number, because the mean of its divisors is an integer number (20169603762).

Almost surely, 2^394662491395 is an apocalyptic number.

394662491395 is a deficient number, since it is larger than the sum of its proper divisors (89407998893).

394662491395 is a wasteful number, since it uses less digits than its factorization.

394662491395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13731 (or 13684 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 61.

The spelling of 394662491395 in words is "three hundred ninety-four billion, six hundred sixty-two million, four hundred ninety-one thousand, three hundred ninety-five".