2400404221 has 8 divisors (see below), whose sum is σ = 2414120544. Its totient is φ = 2386703760.

The previous prime is 2400404173. The next prime is 2400404287. The reversal of 2400404221 is 1224040042.

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

It is a cyclic number.

It is not a de Polignac number, because 2400404221 - 2¹⁵ = 2400371453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400404921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431226 + ... + 436756.

It is an arithmetic number, because the mean of its divisors is an integer number (301765068).

Almost surely, 2^2400404221 is an apocalyptic number.

It is an amenable number.

2400404221 is a deficient number, since it is larger than the sum of its proper divisors (13716323).

2400404221 is a wasteful number, since it uses less digits than its factorization.

2400404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2400404221 is about 48993.9202452712. The cubic root of 2400404221 is about 1338.9410622938.

Adding to 2400404221 its reverse (1224040042), we get a palindrome (3624444263).

The spelling of 2400404221 in words is "two billion, four hundred million, four hundred four thousand, two hundred twenty-one".