394465 has 4 divisors (see below), whose sum is σ = 473364. Its totient is φ = 315568.

The previous prime is 394453. The next prime is 394481. The reversal of 394465 is 564493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564493 = 271 ⋅2083.

It can be written as a sum of positive squares in 2 ways, for example, as 147456 + 247009 = 384^2 + 497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394465 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 9² + 4⁴ + 4⁷ + 6⁷ + 5⁷ .

It is a Duffinian number.

394465 is a lucky number.

It is an unprimeable number.

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, 39442 + ... + 39451.

It is an arithmetic number, because the mean of its divisors is an integer number (118341).

2³⁹⁴⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

394465 is a deficient number, since it is larger than the sum of its proper divisors (78899).

394465 is an equidigital number, since it uses as much as digits as its factorization.

394465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78898.

The product of its digits is 12960, while the sum is 31.

The square root of 394465 is about 628.0644871349. The cubic root of 394465 is about 73.3391983372.

The spelling of 394465 in words is "three hundred ninety-four thousand, four hundred sixty-five".