40004144447 has 2 divisors, whose sum is σ = 40004144448. Its totient is φ = 40004144446.

The previous prime is 40004144429. The next prime is 40004144471. The reversal of 40004144447 is 74444140004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40004144447 - 2¹⁴ = 40004128063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40004144497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002072223 + 20002072224.

It is an arithmetic number, because the mean of its divisors is an integer number (20002072224).

Almost surely, 2^40004144447 is an apocalyptic number.

40004144447 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004144447 is an equidigital number, since it uses as much as digits as its factorization.

40004144447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 32.

The spelling of 40004144447 in words is "forty billion, four million, one hundred forty-four thousand, four hundred forty-seven".