404261 has 12 divisors (see below), whose sum is σ = 480396. Its totient is φ = 337920.

The previous prime is 404251. The next prime is 404267. The reversal of 404261 is 162404.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 148225 = 506^2 + 385^2 .

It is not a de Polignac number, because 404261 - 2⁶ = 404197 is a prime.

It is a super-2 number, since 2×404261² = 326853912242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1445 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (40033).

2⁴⁰⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

404261 is a deficient number, since it is larger than the sum of its proper divisors (76135).

404261 is a wasteful number, since it uses less digits than its factorization.

404261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 404261 is about 635.8152247312. The cubic root of 404261 is about 73.9413340727.

Adding to 404261 its reverse (162404), we get a palindrome (566665).

The spelling of 404261 in words is "four hundred four thousand, two hundred sixty-one".