394669 has 4 divisors (see below), whose sum is σ = 430560. Its totient is φ = 358780.

The previous prime is 394643. The next prime is 394673. The reversal of 394669 is 966493.

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 a cyclic number.

It is not a de Polignac number, because 394669 - 2⁵ = 394637 is a prime.

It is a super-2 number, since 2×394669² = 311527239122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394619) 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, 17929 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (107640).

2³⁹⁴⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

394669 is a deficient number, since it is larger than the sum of its proper divisors (35891).

394669 is a wasteful number, since it uses less digits than its factorization.

394669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35890.

The product of its digits is 34992, while the sum is 37.

The square root of 394669 is about 628.2268698488. The cubic root of 394669 is about 73.3518387642.

The spelling of 394669 in words is "three hundred ninety-four thousand, six hundred sixty-nine".