394437 has 4 divisors (see below), whose sum is σ = 525920. Its totient is φ = 262956.

The previous prime is 394411. The next prime is 394453. The reversal of 394437 is 734493.

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.

It is not a de Polignac number, because 394437 - 2¹⁰ = 393413 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65737 + ... + 65742.

It is an arithmetic number, because the mean of its divisors is an integer number (131480).

2³⁹⁴⁴³⁷ is an apocalyptic number.

It is an amenable number.

394437 is a deficient number, since it is larger than the sum of its proper divisors (131483).

394437 is a wasteful number, since it uses less digits than its factorization.

394437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131482.

The product of its digits is 9072, while the sum is 30.

The square root of 394437 is about 628.0421960346. The cubic root of 394437 is about 73.3374630365.

The spelling of 394437 in words is "three hundred ninety-four thousand, four hundred thirty-seven".