400000044047 has 2 divisors, whose sum is σ = 400000044048. Its totient is φ = 400000044046.

The previous prime is 400000043987. The next prime is 400000044053. The reversal of 400000044047 is 740440000004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400000044047 - 2¹² = 400000039951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400000044077) 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, 200000022023 + 200000022024.

It is an arithmetic number, because the mean of its divisors is an integer number (200000022024).

Almost surely, 2^400000044047 is an apocalyptic number.

400000044047 is a deficient number, since it is larger than the sum of its proper divisors (1).

400000044047 is an equidigital number, since it uses as much as digits as its factorization.

400000044047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 23.

The spelling of 400000044047 in words is "four hundred billion, forty-four thousand, forty-seven".