394617343930 has 8 divisors (see below), whose sum is σ = 710311219092. Its totient is φ = 157846937568.

The previous prime is 394617343927. The next prime is 394617343931. The reversal of 394617343930 is 39343716493.

It can be written as a sum of positive squares in 2 ways, for example, as 389492072649 + 5125271281 = 624093^2 + 71591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (394617343931) 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, 19730867187 + ... + 19730867206.

Almost surely, 2^394617343930 is an apocalyptic number.

394617343930 is a deficient number, since it is larger than the sum of its proper divisors (315693875162).

394617343930 is a wasteful number, since it uses less digits than its factorization.

394617343930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39461734400.

The product of its (nonzero) digits is 4408992, while the sum is 52.

The spelling of 394617343930 in words is "three hundred ninety-four billion, six hundred seventeen million, three hundred forty-three thousand, nine hundred thirty".