2004402401 has 4 divisors (see below), whose sum is σ = 2004525204. Its totient is φ = 2004279600.

The previous prime is 2004402377. The next prime is 2004402451. The reversal of 2004402401 is 1042044002.

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 1185011776 + 819390625 = 34424^2 + 28625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004402401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2004402401.

It is not an unprimeable number, because it can be changed into a prime (2004402451) 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, 32330 + ... + 71091.

It is an arithmetic number, because the mean of its divisors is an integer number (501131301).

Almost surely, 2^2004402401 is an apocalyptic number.

It is an amenable number.

2004402401 is a deficient number, since it is larger than the sum of its proper divisors (122803).

2004402401 is a wasteful number, since it uses less digits than its factorization.

2004402401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122802.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2004402401 is about 44770.5528333077. The cubic root of 2004402401 is about 1260.8448187076.

Adding to 2004402401 its reverse (1042044002), we get a palindrome (3046446403).

The spelling of 2004402401 in words is "two billion, four million, four hundred two thousand, four hundred one".