394091357 has 8 divisors (see below), whose sum is σ = 430071552. Its totient is φ = 358136800.

The previous prime is 394091339. The next prime is 394091359. The reversal of 394091357 is 753190493.

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 394091357 - 2¹² = 394087261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394091359) 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, 41057 + ... + 49737.

It is an arithmetic number, because the mean of its divisors is an integer number (53758944).

Almost surely, 2^394091357 is an apocalyptic number.

It is an amenable number.

394091357 is a deficient number, since it is larger than the sum of its proper divisors (35980195).

394091357 is a wasteful number, since it uses less digits than its factorization.

394091357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12819.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 394091357 is about 19851.7343574812. The cubic root of 394091357 is about 733.1603503606.

The spelling of 394091357 in words is "three hundred ninety-four million, ninety-one thousand, three hundred fifty-seven".