394893886 has 4 divisors (see below), whose sum is σ = 592340832. Its totient is φ = 197446942.

The previous prime is 394893881. The next prime is 394893971. The reversal of 394893886 is 688398493.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 394893886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394893881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98723470 + ... + 98723473.

It is an arithmetic number, because the mean of its divisors is an integer number (148085208).

Almost surely, 2^394893886 is an apocalyptic number.

394893886 is a deficient number, since it is larger than the sum of its proper divisors (197446946).

394893886 is a wasteful number, since it uses less digits than its factorization.

394893886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197446945.

The product of its digits is 8957952, while the sum is 58.

The square root of 394893886 is about 19871.9371476462. The cubic root of 394893886 is about 733.6576830128.

The spelling of 394893886 in words is "three hundred ninety-four million, eight hundred ninety-three thousand, eight hundred eighty-six".