394495505 has 8 divisors (see below), whose sum is σ = 473538624. Its totient is φ = 315500400.

The previous prime is 394495501. The next prime is 394495511. The reversal of 394495505 is 505594493.

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

It is not a de Polignac number, because 394495505 - 2² = 394495501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394495501) 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, 9620 + ... + 29690.

It is an arithmetic number, because the mean of its divisors is an integer number (59192328).

Almost surely, 2^394495505 is an apocalyptic number.

It is an amenable number.

394495505 is a deficient number, since it is larger than the sum of its proper divisors (79043119).

394495505 is a wasteful number, since it uses less digits than its factorization.

394495505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24007.

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 394495505 is about 19861.9109100811. The cubic root of 394495505 is about 733.4108879181.

The spelling of 394495505 in words is "three hundred ninety-four million, four hundred ninety-five thousand, five hundred five".