400440800411 has 2 divisors, whose sum is σ = 400440800412. Its totient is φ = 400440800410.

The previous prime is 400440800351. The next prime is 400440800423. The reversal of 400440800411 is 114008044004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400440800411 - 2²⁶ = 400373691547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (400440830411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200220400205 + 200220400206.

It is an arithmetic number, because the mean of its divisors is an integer number (200220400206).

Almost surely, 2^400440800411 is an apocalyptic number.

400440800411 is a deficient number, since it is larger than the sum of its proper divisors (1).

400440800411 is an equidigital number, since it uses as much as digits as its factorization.

400440800411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 400440800411 its reverse (114008044004), we get a palindrome (514448844415).

The spelling of 400440800411 in words is "four hundred billion, four hundred forty million, eight hundred thousand, four hundred eleven".