404101 has 4 divisors (see below), whose sum is σ = 408204. Its totient is φ = 400000.

The previous prime is 404099. The next prime is 404113. The reversal of 404101 is 101404.

404101 = 449² + 450².

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 202500 + 201601 = 450^2 + 449^2 .

It is a 4-Lehmer number, since φ(404101) divides (404101-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 404101 - 2¹ = 404099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404161) 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, 1900 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (102051).

2⁴⁰⁴¹⁰¹ is an apocalyptic number.

404101 is the 450-th centered square number.

It is an amenable number.

404101 is a deficient number, since it is larger than the sum of its proper divisors (4103).

404101 is a wasteful number, since it uses less digits than its factorization.

404101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 404101 is about 635.6893895607. The cubic root of 404101 is about 73.9315778553.

Adding to 404101 its reverse (101404), we get a palindrome (505505).

It can be divided in two parts, 404 and 101, that multiplied together give a palindrome (40804).

The spelling of 404101 in words is "four hundred four thousand, one hundred one", and thus it is an iban number.