404002401 has 8 divisors (see below), whose sum is σ = 587639904. Its totient is φ = 244849920.

The previous prime is 404002387. The next prime is 404002427. The reversal of 404002401 is 104200404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 404002401 - 2⁵ = 404002369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404002601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6121216 + ... + 6121281.

It is an arithmetic number, because the mean of its divisors is an integer number (73454988).

Almost surely, 2^404002401 is an apocalyptic number.

It is an amenable number.

404002401 is a deficient number, since it is larger than the sum of its proper divisors (183637503).

404002401 is a wasteful number, since it uses less digits than its factorization.

404002401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242511.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 404002401 is about 20099.8109692604. The cubic root of 404002401 is about 739.2556436481.

Adding to 404002401 its reverse (104200404), we get a palindrome (508202805).

The spelling of 404002401 in words is "four hundred four million, two thousand, four hundred one".