394857429 has 8 divisors (see below), whose sum is σ = 539317632. Its totient is φ = 256817760.

The previous prime is 394857413. The next prime is 394857461. The reversal of 394857429 is 924758493.

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

It is not a de Polignac number, because 394857429 - 2⁴ = 394857413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394857469) 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, 1604989 + ... + 1605234.

It is an arithmetic number, because the mean of its divisors is an integer number (67414704).

Almost surely, 2^394857429 is an apocalyptic number.

It is an amenable number.

394857429 is a deficient number, since it is larger than the sum of its proper divisors (144460203).

394857429 is a wasteful number, since it uses less digits than its factorization.

394857429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210267.

The product of its digits is 2177280, while the sum is 51.

The square root of 394857429 is about 19871.0198278800. The cubic root of 394857429 is about 733.6351049800.

The spelling of 394857429 in words is "three hundred ninety-four million, eight hundred fifty-seven thousand, four hundred twenty-nine".