404365 has 8 divisors (see below), whose sum is σ = 522648. Its totient is φ = 298560.

The previous prime is 404357. The next prime is 404381. The reversal of 404365 is 563404.

It can be written as a sum of positive squares in 4 ways, for example, as 11236 + 393129 = 106^2 + 627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404365 - 2³ = 404357 is a prime.

It is a super-2 number, since 2×404365² = 327022106450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404365.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3046 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (65331).

2⁴⁰⁴³⁶⁵ is an apocalyptic number.

It is an amenable number.

404365 is a deficient number, since it is larger than the sum of its proper divisors (118283).

404365 is a wasteful number, since it uses less digits than its factorization.

404365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 404365 is about 635.8970042389. The cubic root of 404365 is about 73.9476742337.

Adding to 404365 its reverse (563404), we get a palindrome (967769).

The spelling of 404365 in words is "four hundred four thousand, three hundred sixty-five".