400404014401 has 4 divisors (see below), whose sum is σ = 400420597204. Its totient is φ = 400387431600.

The previous prime is 400404014383. The next prime is 400404014419. The reversal of 400404014401 is 104410404004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (400404014383) and next prime (400404014419).

It can be written as a sum of positive squares in 2 ways, for example, as 203356804401 + 197047210000 = 450951^2 + 443900^2 .

It is a cyclic number.

It is not a de Polignac number, because 400404014401 - 2³³ = 391814079809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400404014441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8255130 + ... + 8303491.

It is an arithmetic number, because the mean of its divisors is an integer number (100105149301).

Almost surely, 2^400404014401 is an apocalyptic number.

It is an amenable number.

400404014401 is a deficient number, since it is larger than the sum of its proper divisors (16582803).

400404014401 is a wasteful number, since it uses less digits than its factorization.

400404014401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16582802.

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

Adding to 400404014401 its reverse (104410404004), we get a palindrome (504814418405).

The spelling of 400404014401 in words is "four hundred billion, four hundred four million, fourteen thousand, four hundred one".