394677845 has 8 divisors (see below), whose sum is σ = 481641120. Its totient is φ = 310390480.

The previous prime is 394677841. The next prime is 394677883. The reversal of 394677845 is 548776493.

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

It is not a de Polignac number, because 394677845 - 2² = 394677841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394677841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668651 + ... + 669240.

It is an arithmetic number, because the mean of its divisors is an integer number (60205140).

Almost surely, 2^394677845 is an apocalyptic number.

It is an amenable number.

394677845 is a deficient number, since it is larger than the sum of its proper divisors (86963275).

394677845 is a wasteful number, since it uses less digits than its factorization.

394677845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337955.

The product of its digits is 5080320, while the sum is 53.

The square root of 394677845 is about 19866.5005725719. The cubic root of 394677845 is about 733.5238672728.

The spelling of 394677845 in words is "three hundred ninety-four million, six hundred seventy-seven thousand, eight hundred forty-five".