394476687361 has 4 divisors (see below), whose sum is σ = 407201741824. Its totient is φ = 381751632900.

The previous prime is 394476687313. The next prime is 394476687373. The reversal of 394476687361 is 163786674493.

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.

It is a cyclic number.

It is not a de Polignac number, because 394476687361 - 2¹³ = 394476679169 is a prime.

It is a super-2 number, since 2×394476687361² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394476687293 and 394476687302.

It is not an unprimeable number, because it can be changed into a prime (394476684361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6362527185 + ... + 6362527246.

It is an arithmetic number, because the mean of its divisors is an integer number (101800435456).

Almost surely, 2^394476687361 is an apocalyptic number.

394476687361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

394476687361 is a deficient number, since it is larger than the sum of its proper divisors (12725054463).

394476687361 is a wasteful number, since it uses less digits than its factorization.

394476687361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12725054462.

The product of its digits is 109734912, while the sum is 64.

The spelling of 394476687361 in words is "three hundred ninety-four billion, four hundred seventy-six million, six hundred eighty-seven thousand, three hundred sixty-one".