400010444401 has 4 divisors (see below), whose sum is σ = 400051409472. Its totient is φ = 399969479332.

The previous prime is 400010444369. The next prime is 400010444411. The reversal of 400010444401 is 104444010004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400010444401 - 2⁵ = 400010444369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400010444411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20467885 + ... + 20487418.

It is an arithmetic number, because the mean of its divisors is an integer number (100012852368).

Almost surely, 2^400010444401 is an apocalyptic number.

It is an amenable number.

400010444401 is a deficient number, since it is larger than the sum of its proper divisors (40965071).

400010444401 is an equidigital number, since it uses as much as digits as its factorization.

400010444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40965070.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 400010444401 its reverse (104444010004), we get a palindrome (504454454405).

The spelling of 400010444401 in words is "four hundred billion, ten million, four hundred forty-four thousand, four hundred one".