394146473835 has 64 divisors (see below), whose sum is σ = 644198054400. Its totient is φ = 205746508800.

The previous prime is 394146473801. The next prime is 394146473839. The reversal of 394146473835 is 538374641493.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-394146473835 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394146473839) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84778591 + ... + 84783239.

It is an arithmetic number, because the mean of its divisors is an integer number (10065594600).

Almost surely, 2^394146473835 is an apocalyptic number.

394146473835 is a deficient number, since it is larger than the sum of its proper divisors (250051580565).

394146473835 is a wasteful number, since it uses less digits than its factorization.

394146473835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388.

The product of its digits is 26127360, while the sum is 57.

The spelling of 394146473835 in words is "three hundred ninety-four billion, one hundred forty-six million, four hundred seventy-three thousand, eight hundred thirty-five".