394738804633 has 4 divisors (see below), whose sum is σ = 394740172288. Its totient is φ = 394737436980.

The previous prime is 394738804589. The next prime is 394738804657. The reversal of 394738804633 is 336408837493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 394738804633 - 2⁹ = 394738804121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394738804673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63033 + ... + 890758.

It is an arithmetic number, because the mean of its divisors is an integer number (98685043072).

Almost surely, 2^394738804633 is an apocalyptic number.

It is an amenable number.

394738804633 is a deficient number, since it is larger than the sum of its proper divisors (1367655).

394738804633 is an equidigital number, since it uses as much as digits as its factorization.

394738804633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367654.

The product of its (nonzero) digits is 31352832, while the sum is 58.

The spelling of 394738804633 in words is "three hundred ninety-four billion, seven hundred thirty-eight million, eight hundred four thousand, six hundred thirty-three".