4040401 has 2 divisors, whose sum is σ = 4040402. Its totient is φ = 4040400.

The previous prime is 4040389. The next prime is 4040411. The reversal of 4040401 is 1040404.

It is a happy number.

4040401 is nontrivially palindromic in base 12.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 40401 = 2000^2 + 201^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040401 - 2¹⁷ = 3909329 is a prime.

4040401 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4040411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020200 + 2020201.

It is an arithmetic number, because the mean of its divisors is an integer number (2020201).

Almost surely, 2^4040401 is an apocalyptic number.

It is an amenable number.

4040401 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040401 is an equidigital number, since it uses as much as digits as its factorization.

4040401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4040401 is about 2010.0748742273. The cubic root of 4040401 is about 159.2727541550.

Adding to 4040401 its reverse (1040404), we get a palindrome (5080805).

The spelling of 4040401 in words is "four million, forty thousand, four hundred one".