4043402401 has 4 divisors (see below), whose sum is σ = 4182830100. Its totient is φ = 3903974704.

The previous prime is 4043402399. The next prime is 4043402431. The reversal of 4043402401 is 1042043404.

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 1648278801 + 2395123600 = 40599^2 + 48940^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043402401 - 2¹ = 4043402399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4043402431) 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 in 3 ways as a sum of consecutive naturals, for example, 69713806 + ... + 69713863.

It is an arithmetic number, because the mean of its divisors is an integer number (1045707525).

Almost surely, 2^4043402401 is an apocalyptic number.

It is an amenable number.

4043402401 is a deficient number, since it is larger than the sum of its proper divisors (139427699).

4043402401 is a wasteful number, since it uses less digits than its factorization.

4043402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139427698.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4043402401 is about 63587.7535457890. The cubic root of 4043402401 is about 1593.1218283889.

Adding to 4043402401 its reverse (1042043404), we get a palindrome (5085445805).

The spelling of 4043402401 in words is "four billion, forty-three million, four hundred two thousand, four hundred one".