400044004037 has 2 divisors, whose sum is σ = 400044004038. Its totient is φ = 400044004036.

The previous prime is 400044003971. The next prime is 400044004057. The reversal of 400044004037 is 730400440004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 263758253476 + 136285750561 = 513574^2 + 369169^2 .

It is a cyclic number.

It is not a de Polignac number, because 400044004037 - 2⁸ = 400044003781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400044003997 and 400044004015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400044004057) 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 as a sum of consecutive naturals, namely, 200022002018 + 200022002019.

It is an arithmetic number, because the mean of its divisors is an integer number (200022002019).

Almost surely, 2^400044004037 is an apocalyptic number.

It is an amenable number.

400044004037 is a deficient number, since it is larger than the sum of its proper divisors (1).

400044004037 is an equidigital number, since it uses as much as digits as its factorization.

400044004037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The spelling of 400044004037 in words is "four hundred billion, forty-four million, four thousand, thirty-seven".