404098 has 4 divisors (see below), whose sum is σ = 606150. Its totient is φ = 202048.

The previous prime is 404081. The next prime is 404099. The reversal of 404098 is 890404.

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., 380689 + 23409 = 617^2 + 153^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (404099) by changing a digit.

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 as a sum of consecutive naturals, namely, 101023 + ... + 101026.

2⁴⁰⁴⁰⁹⁸ is an apocalyptic number.

404098 is a deficient number, since it is larger than the sum of its proper divisors (202052).

404098 is a wasteful number, since it uses less digits than its factorization.

404098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202051.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 404098 is about 635.6870299133. The cubic root of 404098 is about 73.9313949017.

The spelling of 404098 in words is "four hundred four thousand, ninety-eight".