404258 has 4 divisors (see below), whose sum is σ = 606390. Its totient is φ = 202128.

The previous prime is 404251. The next prime is 404267. The reversal of 404258 is 852404.

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

It can be written as a sum of positive squares in only one way, i.e., 388129 + 16129 = 623^2 + 127^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (404251) by changing a digit.

404258 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101063 + ... + 101066.

2⁴⁰⁴²⁵⁸ is an apocalyptic number.

404258 is a deficient number, since it is larger than the sum of its proper divisors (202132).

404258 is a wasteful number, since it uses less digits than its factorization.

404258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202131.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 404258 is about 635.8128655509. The cubic root of 404258 is about 73.9411511673.

The spelling of 404258 in words is "four hundred four thousand, two hundred fifty-eight".