394957 has 4 divisors (see below), whose sum is σ = 396256. Its totient is φ = 393660.

The previous prime is 394943. The next prime is 394963. The reversal of 394957 is 759493.

394957 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 759493 = 7 ⋅108499.

It is a cyclic number.

It is not a de Polignac number, because 394957 - 2⁷ = 394829 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 (394967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82 + ... + 892.

It is an arithmetic number, because the mean of its divisors is an integer number (99064).

2³⁹⁴⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

394957 is a deficient number, since it is larger than the sum of its proper divisors (1299).

394957 is an equidigital number, since it uses as much as digits as its factorization.

394957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 34020, while the sum is 37.

The square root of 394957 is about 628.4560446046. The cubic root of 394957 is about 73.3696766596.

The spelling of 394957 in words is "three hundred ninety-four thousand, nine hundred fifty-seven".