394457 has 8 divisors (see below), whose sum is σ = 463296. Its totient is φ = 328752.

The previous prime is 394453. The next prime is 394481. The reversal of 394457 is 754493.

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 394457 - 2² = 394453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394453) 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, 503 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (57912).

2³⁹⁴⁴⁵⁷ is an apocalyptic number.

394457 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

394457 is a deficient number, since it is larger than the sum of its proper divisors (68839).

394457 is a wasteful number, since it uses less digits than its factorization.

394457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 15120, while the sum is 32.

The square root of 394457 is about 628.0581183298. The cubic root of 394457 is about 73.3387025454.

The spelling of 394457 in words is "three hundred ninety-four thousand, four hundred fifty-seven".