404100101 has 4 divisors (see below), whose sum is σ = 404247072. Its totient is φ = 403953132.

The previous prime is 404100083. The next prime is 404100107. The reversal of 404100101 is 101001404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404100101 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 (404100107) 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, 69281 + ... + 74886.

It is an arithmetic number, because the mean of its divisors is an integer number (101061768).

Almost surely, 2^404100101 is an apocalyptic number.

It is an amenable number.

404100101 is a deficient number, since it is larger than the sum of its proper divisors (146971).

404100101 is a wasteful number, since it uses less digits than its factorization.

404100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146970.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 404100101 is about 20102.2411934590. The cubic root of 404100101 is about 739.3152303031.

Adding to 404100101 its reverse (101001404), we get a palindrome (505101505).

The spelling of 404100101 in words is "four hundred four million, one hundred thousand, one hundred one".