404040101 has 2 divisors, whose sum is σ = 404040102. Its totient is φ = 404040100.

The previous prime is 404040067. The next prime is 404040127. The reversal of 404040101 is 101040404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338008225 + 66031876 = 18385^2 + 8126^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404040101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404040401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202020050 + 202020051.

It is an arithmetic number, because the mean of its divisors is an integer number (202020051).

Almost surely, 2^404040101 is an apocalyptic number.

It is an amenable number.

404040101 is a deficient number, since it is larger than the sum of its proper divisors (1).

404040101 is an equidigital number, since it uses as much as digits as its factorization.

404040101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 404040101 is about 20100.7487671480. The cubic root of 404040101 is about 739.2786377943.

Adding to 404040101 its reverse (101040404), we get a palindrome (505080505).

The spelling of 404040101 in words is "four hundred four million, forty thousand, one hundred one".