394709090017 has 8 divisors (see below), whose sum is σ = 431550741600. Its totient is φ = 358027272960.

The previous prime is 394709090003. The next prime is 394709090023. The reversal of 394709090017 is 710090907493.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 394709090017 - 2⁷ = 394709089889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394709090317) 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, 39953463 + ... + 39963340.

It is an arithmetic number, because the mean of its divisors is an integer number (53943842700).

Almost surely, 2^394709090017 is an apocalyptic number.

It is an amenable number.

394709090017 is a deficient number, since it is larger than the sum of its proper divisors (36841651583).

394709090017 is a wasteful number, since it uses less digits than its factorization.

394709090017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79917263.

The product of its (nonzero) digits is 428652, while the sum is 49.

The spelling of 394709090017 in words is "three hundred ninety-four billion, seven hundred nine million, ninety thousand, seventeen".