406544101 has 4 divisors (see below), whose sum is σ = 406612492. Its totient is φ = 406475712.

The previous prime is 406544093. The next prime is 406544107. The reversal of 406544101 is 101445604.

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 375351876 + 31192225 = 19374^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 406544101 - 2³ = 406544093 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 (406544107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24330 + ... + 37483.

It is an arithmetic number, because the mean of its divisors is an integer number (101653123).

Almost surely, 2^406544101 is an apocalyptic number.

It is an amenable number.

406544101 is a deficient number, since it is larger than the sum of its proper divisors (68391).

406544101 is an equidigital number, since it uses as much as digits as its factorization.

406544101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68390.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 406544101 is about 20162.9387986970. The cubic root of 406544101 is about 740.8026966692.

Adding to 406544101 its reverse (101445604), we get a palindrome (507989705).

The spelling of 406544101 in words is "four hundred six million, five hundred forty-four thousand, one hundred one".