394432632305 has 16 divisors (see below), whose sum is σ = 484908415488. Its totient is φ = 307821360000.

The previous prime is 394432632283. The next prime is 394432632311. The reversal of 394432632305 is 503236234493.

It is not a de Polignac number, because 394432632305 - 2⁶ = 394432632241 is a prime.

It is a super-2 number, since 2×394432632305² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284670 + ... + 2451240.

It is an arithmetic number, because the mean of its divisors is an integer number (30306775968).

Almost surely, 2^394432632305 is an apocalyptic number.

It is an amenable number.

394432632305 is a deficient number, since it is larger than the sum of its proper divisors (90475783183).

394432632305 is a wasteful number, since it uses less digits than its factorization.

394432632305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178168.

The product of its (nonzero) digits is 1399680, while the sum is 44.

Adding to 394432632305 its reverse (503236234493), we get a palindrome (897668866798).

The spelling of 394432632305 in words is "three hundred ninety-four billion, four hundred thirty-two million, six hundred thirty-two thousand, three hundred five".