404237 has 4 divisors (see below), whose sum is σ = 407100. Its totient is φ = 401376.

The previous prime is 404221. The next prime is 404249. The reversal of 404237 is 732404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 249001 + 155236 = 499^2 + 394^2 .

It is a cyclic number.

It is not a de Polignac number, because 404237 - 2⁴ = 404221 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

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 404237.

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 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 1505.

It is an arithmetic number, because the mean of its divisors is an integer number (101775).

2⁴⁰⁴²³⁷ is an apocalyptic number.

It is an amenable number.

404237 is a deficient number, since it is larger than the sum of its proper divisors (2863).

404237 is a wasteful number, since it uses less digits than its factorization.

404237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 404237 is about 635.7963510433. The cubic root of 404237 is about 73.9398708042.

The spelling of 404237 in words is "four hundred four thousand, two hundred thirty-seven".